diff --git a/src/connector/README.md b/src/connector/README.md
index 47b9166f..17bc181c 100644
--- a/src/connector/README.md
+++ b/src/connector/README.md
@@ -3,12 +3,12 @@ Outline of the code at this point.
 
 This is Work-in-Progress.
 
-Current state of the code: Some interop-tests work now.
+Current state of the code: All interop-tests work
  (interop-tests are listed here
    https://github.com/stanley-cheung/grpc-web/blob/add-interop/test/interop/README.md
 
- To ru nthe interop-tests with this code, do the following
- 1. mvn test. This brings ip a Test Service + grpc-web in-process proxy 
+ To run the interop-tests with this code, do the following
+ 1. mvn package. This brings ip a Test Service + grpc-web in-process proxy 
  2. Run the client as documented here:
     https://github.com/stanley-cheung/grpc-web/blob/add-interop/test/interop/README.md#run-the-grpc-web-browser-client
 
@@ -17,6 +17,5 @@ Current state of the code: Some interop-tests work now.
 5. It should show the following:
       EmptyUnary: passed
       LargeUnary: passed
-      (and then some errors on the other tests which are not yet implemented in
-      this grpc-web java proxy code.. working on it)
+      etc for all tests
 
diff --git a/src/connector/pom.xml b/src/connector/pom.xml
index ee684116..9dcb8775 100644
--- a/src/connector/pom.xml
+++ b/src/connector/pom.xml
@@ -17,6 +17,16 @@
   </properties>
 
   <dependencies>
+    <dependency>
+      <groupId>com.google.guava</groupId>
+      <artifactId>guava</artifactId>
+      <version>27.0.1-jre</version>
+    </dependency>
+    <dependency>
+      <groupId>com.google.protobuf</groupId>
+      <artifactId>protobuf-java</artifactId>
+      <version>3.11.4</version>
+    </dependency>
     <dependency>
       <groupId>org.eclipse.jetty</groupId>
       <artifactId>jetty-maven-plugin</artifactId>
@@ -75,6 +85,24 @@
       </extension>
     </extensions>
     <plugins>
+      <plugin>
+        <groupId>org.xolstice.maven.plugins</groupId>
+        <artifactId>protobuf-maven-plugin</artifactId>
+        <version>0.5.0</version>
+        <configuration>
+          <protocArtifact>com.google.protobuf:protoc:3.4.0:exe:${os.detected.classifier}</protocArtifact>
+          <pluginId>grpc-java</pluginId>
+          <pluginArtifact>io.grpc:protoc-gen-grpc-java:1.7.0:exe:${os.detected.classifier}</pluginArtifact>
+        </configuration>
+        <executions>
+          <execution>
+            <goals>
+              <goal>compile</goal>
+              <goal>compile-custom</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>exec-maven-plugin</artifactId>
diff --git a/src/connector/src/main/java/com/google/grpcweb/Factory.java b/src/connector/src/main/java/com/google/grpcweb/Factory.java
index fe060703..a214d1c2 100644
--- a/src/connector/src/main/java/com/google/grpcweb/Factory.java
+++ b/src/connector/src/main/java/com/google/grpcweb/Factory.java
@@ -7,8 +7,8 @@
  * This is primarily to make unittesting easier for callers of objects supplied by this factory.
  */
 public class Factory {
-  private final GrpcServiceConnectionManager mGrpcServiceConnectionManager;
   private static Factory mInstance;
+  private int mGrpPortNum;
 
   public synchronized static void createSingleton(int grpcPortNum) {
     if (mInstance == null) {
@@ -19,10 +19,10 @@ public synchronized static void createSingleton(int grpcPortNum) {
   static Factory getInstance() { return mInstance;}
 
   private Factory(int grpcPortNum) {
-    mGrpcServiceConnectionManager = new GrpcServiceConnectionManager(grpcPortNum);
+    mGrpPortNum = grpcPortNum;
   }
 
   GrpcServiceConnectionManager getGrpcServiceConnectionManager() {
-    return mGrpcServiceConnectionManager;
+    return new GrpcServiceConnectionManager(mGrpPortNum);
   }
 }
diff --git a/src/connector/src/main/java/com/google/grpcweb/GrpcServiceConnectionManager.java b/src/connector/src/main/java/com/google/grpcweb/GrpcServiceConnectionManager.java
index 2bfb49dd..a48a7a4f 100644
--- a/src/connector/src/main/java/com/google/grpcweb/GrpcServiceConnectionManager.java
+++ b/src/connector/src/main/java/com/google/grpcweb/GrpcServiceConnectionManager.java
@@ -1,10 +1,12 @@
 package com.google.grpcweb;
 
+import io.grpc.Channel;
+import io.grpc.ClientInterceptors;
 import io.grpc.ManagedChannel;
 import io.grpc.ManagedChannelBuilder;
 
 /**
- * Manages the connection pool to talk to the grpc-service
+ * TODO: Manage the connection pool to talk to the grpc-service
  */
 class GrpcServiceConnectionManager {
   private final int mGrpcPortNum;
@@ -13,10 +15,14 @@ class GrpcServiceConnectionManager {
     mGrpcPortNum  = grpcPortNum;
   }
 
-  ManagedChannel getChannel() {
+  private ManagedChannel getManagedChannel() {
     // TODO: Manage a connection pool.
     return ManagedChannelBuilder.forAddress("localhost", mGrpcPortNum)
         .usePlaintext()
         .build();
   }
+
+  Channel getChannelWithClientInterceptor(GrpcWebClientInterceptor interceptor) {
+    return ClientInterceptors.intercept(getManagedChannel(), interceptor);
+  }
 }
diff --git a/src/connector/src/main/java/com/google/grpcweb/GrpcWebClientInterceptor.java b/src/connector/src/main/java/com/google/grpcweb/GrpcWebClientInterceptor.java
new file mode 100644
index 00000000..cbb9b399
--- /dev/null
+++ b/src/connector/src/main/java/com/google/grpcweb/GrpcWebClientInterceptor.java
@@ -0,0 +1,68 @@
+package com.google.grpcweb;
+
+import io.grpc.CallOptions;
+import io.grpc.Channel;
+import io.grpc.ClientCall;
+import io.grpc.ClientCall.Listener;
+import io.grpc.ClientInterceptor;
+import io.grpc.ForwardingClientCall.SimpleForwardingClientCall;
+import io.grpc.ForwardingClientCallListener.SimpleForwardingClientCallListener;
+import io.grpc.Metadata;
+import io.grpc.MethodDescriptor;
+import io.grpc.Status;
+import java.util.concurrent.CountDownLatch;
+import java.util.logging.Logger;
+import javax.servlet.http.HttpServletResponse;
+
+class GrpcWebClientInterceptor implements ClientInterceptor {
+  private static final Logger LOG = Logger.getLogger(GrpcWebClientInterceptor.class.getName());
+  private final CountDownLatch mLatch;
+  private final HttpServletResponse mResp;
+  private final SendResponse mSendResponse;
+
+  GrpcWebClientInterceptor(HttpServletResponse resp, CountDownLatch latch, SendResponse send) {
+    mLatch = latch;
+    mResp = resp;
+    mSendResponse = send;
+  }
+
+  @Override
+  public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(MethodDescriptor<ReqT, RespT> method,
+      CallOptions callOptions, Channel channel) {
+   return new SimpleForwardingClientCall<ReqT, RespT>(channel.newCall(method, callOptions)) {
+      @Override
+      public void start(Listener<RespT> responseListener, Metadata headers) {
+        super.start(new MetadataResponseListener<RespT>(responseListener), headers);
+      }
+    };
+  }
+
+  class MetadataResponseListener<T> extends  SimpleForwardingClientCallListener<T> {
+    private boolean headersSent = false;
+
+    MetadataResponseListener(Listener<T> responseListener) {
+      super(responseListener);
+    }
+
+    @Override
+    public void onHeaders(Metadata h) {
+      mSendResponse.writeHeaders(h);
+      headersSent = true;
+    }
+
+    @Override
+    public void onClose(Status s, Metadata t) {
+      if (!headersSent) {
+        // seems, sometimes onHeaders() is not called before this method is called!
+        // so far, they are the error cases. let onError() method in ClientListener
+        // handle this call. Could ignore this.
+        // TODO is this correct? what if onError() never gets called? maybe here it should
+        //  be handled: send headers first and then send the trailers.
+      } else {
+        mSendResponse.writeTrailer(s, t);
+        mLatch.countDown();
+      }
+      super.onClose(s, t);
+    }
+  }
+}
diff --git a/src/connector/src/main/java/com/google/grpcweb/GrpcWebTrafficServlet.java b/src/connector/src/main/java/com/google/grpcweb/GrpcWebTrafficServlet.java
index 99114517..a5ba76b7 100644
--- a/src/connector/src/main/java/com/google/grpcweb/GrpcWebTrafficServlet.java
+++ b/src/connector/src/main/java/com/google/grpcweb/GrpcWebTrafficServlet.java
@@ -1,8 +1,5 @@
 package com.google.grpcweb;
 
-import com.google.common.annotations.VisibleForTesting;
-import java.io.IOException;
-import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -14,14 +11,12 @@ public class GrpcWebTrafficServlet extends HttpServlet {
   private static final long serialVersionUID = 1L;
 
   @Override
-  protected void doGet(HttpServletRequest request, HttpServletResponse response)
-      throws ServletException, IOException {
+  protected void doGet(HttpServletRequest request, HttpServletResponse response) {
     new RequestHandler(mFactory).handle(request, response);
   }
 
   @Override
-  protected void doPost(HttpServletRequest request, HttpServletResponse response)
-      throws ServletException, IOException {
+  protected void doPost(HttpServletRequest request, HttpServletResponse response) {
     doGet(request, response);
   }
 
@@ -30,9 +25,4 @@ protected void doPost(HttpServletRequest request, HttpServletResponse response)
   public GrpcWebTrafficServlet() {
     mFactory = Factory.getInstance();
   }
-
-  @VisibleForTesting
-  GrpcWebTrafficServlet(Factory factory) {
-    mFactory = factory;
-  }
 }
diff --git a/src/connector/src/main/java/com/google/grpcweb/MessageHandler.java b/src/connector/src/main/java/com/google/grpcweb/MessageHandler.java
index 0ab9f7fc..a9003813 100644
--- a/src/connector/src/main/java/com/google/grpcweb/MessageHandler.java
+++ b/src/connector/src/main/java/com/google/grpcweb/MessageHandler.java
@@ -5,12 +5,9 @@
 import java.lang.reflect.Method;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.logging.Logger;
 import javax.servlet.http.HttpServletRequest;
 
 class MessageHandler {
-  private static final Logger LOGGER = Logger.getLogger(MessageHandler.class.getName());
-
   @VisibleForTesting
   enum ContentType {
     GRPC_WEB_BINARY,
@@ -48,7 +45,6 @@ static ContentType getContentType(String type) {
   Object getInputProtobufObj(Method rpcMethod, byte[] in) {
     Class[] inputArgs = rpcMethod.getParameterTypes();
     Class inputArgClass = inputArgs[0];
-    LOGGER.fine("inputArgClass name: " + inputArgClass.getName());
 
     // use the inputArg classtype to create a protobuf object
     Method parseFromObj;
diff --git a/src/connector/src/main/java/com/google/grpcweb/MetadataUtil.java b/src/connector/src/main/java/com/google/grpcweb/MetadataUtil.java
new file mode 100644
index 00000000..1f0d1791
--- /dev/null
+++ b/src/connector/src/main/java/com/google/grpcweb/MetadataUtil.java
@@ -0,0 +1,73 @@
+package com.google.grpcweb;
+
+import io.grpc.Metadata;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import javax.servlet.http.HttpServletRequest;
+
+class MetadataUtil {
+  private static final String BINARY_HEADER_SUFFIX = "-bin";
+  private static final String GRPC_HEADER_PREFIX = "x-grpc-";
+  private static final List<String> EXCLUDED = Arrays.asList("x-grpc-web", "content-type",
+      "grpc-accept-encoding", "grpc-encoding");
+
+  static Metadata getHtpHeaders(HttpServletRequest req) {
+    Metadata httpHeaders = new Metadata();
+    Enumeration<String> headerNames = req.getHeaderNames();
+    if (headerNames == null) {
+      return httpHeaders;
+    }
+    // copy all headers "x-grpc-*" into Metadata
+    // TODO: do we need to copy all "x-*" headers instead?
+    while (headerNames.hasMoreElements()) {
+      String headerName = headerNames.nextElement();
+      if (EXCLUDED.contains(headerName.toLowerCase())) {
+        continue;
+      }
+      if (headerName.toLowerCase().startsWith(GRPC_HEADER_PREFIX)) {
+        // Get all the values of this header.
+        Enumeration<String> values = req.getHeaders(headerName);
+        if (values != null) {
+          // Java enumerations have klunky API. lets convert to a list.
+          // this will be a short list usually.
+          List<String> list = Collections.list(values);
+          for (String s : list) {
+            if (headerName.toLowerCase().endsWith(BINARY_HEADER_SUFFIX)) {
+              // Binary header
+              httpHeaders.put(
+                  Metadata.Key.of(headerName, Metadata.BINARY_BYTE_MARSHALLER), s.getBytes());
+            } else {
+              // String header
+              httpHeaders.put(
+                  Metadata.Key.of(headerName, Metadata.ASCII_STRING_MARSHALLER), s);
+            }
+          }
+        }
+      }
+    }
+    return httpHeaders;
+  }
+
+  static Map<String, String> getHttpHeadersFromMetadata(Metadata trailer) {
+    Map<String, String> map = new HashMap<>();
+    for (String key : trailer.keys()) {
+      if (EXCLUDED.contains(key.toLowerCase())) {
+        continue;
+      }
+      if (key.endsWith(Metadata.BINARY_HEADER_SUFFIX)) {
+        // TODO allow any object type here
+        byte[] value =  trailer.get(Metadata.Key.of(key, Metadata.BINARY_BYTE_MARSHALLER));
+        map.put(key, new String(value));
+      } else {
+        String value = trailer.get(Metadata.Key.of(key, Metadata.ASCII_STRING_MARSHALLER));
+        map.put(key, value);
+      }
+    }
+    return map;
+  }
+}
diff --git a/src/connector/src/main/java/com/google/grpcweb/RequestHandler.java b/src/connector/src/main/java/com/google/grpcweb/RequestHandler.java
index 16e41293..54db5e34 100644
--- a/src/connector/src/main/java/com/google/grpcweb/RequestHandler.java
+++ b/src/connector/src/main/java/com/google/grpcweb/RequestHandler.java
@@ -1,7 +1,9 @@
 package com.google.grpcweb;
 
-import io.grpc.ManagedChannel;
+import io.grpc.Channel;
+import io.grpc.Metadata;
 import io.grpc.Status;
+import io.grpc.stub.MetadataUtils;
 import io.grpc.stub.StreamObserver;
 import java.lang.reflect.Method;
 import java.util.concurrent.CountDownLatch;
@@ -14,14 +16,14 @@
 import org.apache.commons.lang3.tuple.Pair;
 
 class RequestHandler {
-  private static final Logger LOGGER = Logger.getLogger(RequestHandler.class.getName());
+  private static final Logger LOG = Logger.getLogger(RequestHandler.class.getName());
 
-  private final Factory mFactory;
   private final MessageHandler mMessageHandler;
+  private final GrpcServiceConnectionManager mGrpcServiceConnectionManager;
 
   RequestHandler(Factory factory) {
-    mFactory = factory;
     mMessageHandler = new MessageHandler();
+    mGrpcServiceConnectionManager = factory.getGrpcServiceConnectionManager();
   }
 
   public void handle(final HttpServletRequest req, final HttpServletResponse resp) {
@@ -42,10 +44,19 @@ public void handle(final HttpServletRequest req, final HttpServletResponse resp)
         return;
       }
 
-      // get the stubs for the rpc call and the method to be called within the stubs
-      Object asyncStub = getRpcStub(cls, "newStub");
+      // Create a ClientInterceptor object
+      CountDownLatch latch = new CountDownLatch(1);
+      GrpcWebClientInterceptor interceptor =
+          new GrpcWebClientInterceptor(resp, latch, sendResponse);
+      Channel channel = mGrpcServiceConnectionManager.getChannelWithClientInterceptor(interceptor);
+
+      // get the stub for the rpc call and the method to be called within the stub
+      io.grpc.stub.AbstractStub asyncStub = getRpcStub(channel, cls, "newStub");
+      Metadata headers = MetadataUtil.getHtpHeaders(req);
+      if (!headers.keys().isEmpty()) {
+        asyncStub = MetadataUtils.attachHeaders(asyncStub, headers);
+      }
       Method asyncStubCall = getRpcMethod(asyncStub, methodName);
-
       // Get the input object bytes
       ServletInputStream in = req.getInputStream();
       MessageDeframer deframer = new MessageDeframer();
@@ -55,12 +66,13 @@ public void handle(final HttpServletRequest req, final HttpServletResponse resp)
       }
 
       // Invoke the rpc call
-      CountDownLatch latch = new CountDownLatch(1);
       asyncStubCall.invoke(asyncStub, inObj,
           new GrpcCallResponseReceiver(sendResponse, latch));
-      latch.await(500, TimeUnit.MILLISECONDS);
+      if (!latch.await(500, TimeUnit.MILLISECONDS)) {
+        LOG.warning("grpc call took too long!");
+      }
     } catch (Exception e) {
-      LOGGER.info(e.getMessage());
+      LOG.info("Exception occurred: " + e.getMessage());
       resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
     }
   }
@@ -86,18 +98,17 @@ private Class<?> getClassObject(String className) {
     try {
       rpcClass = Class.forName(className + "Grpc");
     } catch (ClassNotFoundException e) {
-      LOGGER.info("no such class " + className);
+      LOG.info("no such class " + className);
     }
     return rpcClass;
   }
 
-  private Object getRpcStub(Class cls, String stubName) {
+  private io.grpc.stub.AbstractStub getRpcStub(Channel ch, Class cls, String stubName) {
     try {
       Method m = cls.getDeclaredMethod(stubName, io.grpc.Channel.class);
-      ManagedChannel channel = mFactory.getGrpcServiceConnectionManager().getChannel();
-      return m.invoke(null, channel);
+      return (io.grpc.stub.AbstractStub) m.invoke(null, ch);
     } catch (Exception e) {
-      LOGGER.warning("Error when fetching " + stubName + " for: " + cls.getName());
+      LOG.warning("Error when fetching " + stubName + " for: " + cls.getName());
       throw new IllegalArgumentException(e);
     }
   }
@@ -133,15 +144,13 @@ public void onNext(java.lang.Object resp) {
     @Override
     public void onError(Throwable t) {
       Status s = Status.fromThrowable(t);
-      LOGGER.info("status is " + s.toString());
       sendResponse.writeError(s);
       latch.countDown();
     }
 
     @Override
     public void onCompleted() {
-      sendResponse.writeGrpcStatusTrailer(Status.OK);
-      sendResponse.writeOk();
+      sendResponse.writeStatusTrailer(Status.OK);
       latch.countDown();
     }
   }
diff --git a/src/connector/src/main/java/com/google/grpcweb/SendResponse.java b/src/connector/src/main/java/com/google/grpcweb/SendResponse.java
index f920e4b7..6128f3ff 100644
--- a/src/connector/src/main/java/com/google/grpcweb/SendResponse.java
+++ b/src/connector/src/main/java/com/google/grpcweb/SendResponse.java
@@ -1,8 +1,10 @@
 package com.google.grpcweb;
 
 import com.google.grpcweb.MessageHandler.ContentType;
+import io.grpc.Metadata;
 import io.grpc.Status;
 import java.io.IOException;
+import java.util.Map;
 import java.util.logging.Logger;
 import javax.servlet.ServletOutputStream;
 import javax.servlet.http.HttpServletRequest;
@@ -14,48 +16,68 @@ class SendResponse {
 
   private final String mContentType;
   private final HttpServletResponse mResp;
+  private boolean isFinalResponseSent = false;
 
   SendResponse(HttpServletRequest req, HttpServletResponse resp) {
     mContentType = req.getContentType();
     mResp = resp;
   }
-  /**
-   * Write response out.
-   */
-  void writeResponse(byte[] out) {
-    setHeaders();
-    writeResponse(out, MessageFramer.Type.DATA);
+
+  synchronized void writeHeaders(Metadata headers) {
+    if (isFinalResponseSent) return;
+    mResp.setContentType(mContentType);
+    mResp.setHeader("transfer-encoding", "chunked");
+    mResp.setHeader("trailer", "grpc-status,grpc-message");
+    if (headers == null) return;
+    Map<String, String> ht = MetadataUtil.getHttpHeadersFromMetadata(headers);
+    StringBuffer sb = new StringBuffer();
+    for (String key : ht.keySet()) {
+      mResp.setHeader(key, ht.get(key));
+    }
   }
 
-  void returnUnimplementedStatusCode() {
-    setHeaders();
-    writeGrpcStatusTrailer(Status.UNIMPLEMENTED);
-    writeOk();
+  synchronized void returnUnimplementedStatusCode() {
+    if (isFinalResponseSent) return;
+    writeHeaders(null);
+    writeStatusTrailer(Status.UNIMPLEMENTED);
+    isFinalResponseSent = true;
   }
 
-  void writeOk() {
-    mResp.setStatus(HttpServletResponse.SC_OK);
+  synchronized void writeError(Status s) {
+    if (isFinalResponseSent) return;
+    writeHeaders(null);
+    writeStatusTrailer(s);
+    isFinalResponseSent = true;
   }
 
-  private void setHeaders() {
-    mResp.setContentType(mContentType);
-    mResp.setHeader("transfer-encoding", "chunked");
-    mResp.setHeader("trailer", "grpc-status,grpc-message");
+  synchronized void writeStatusTrailer(Status status) {
+    writeTrailer(status, null);
   }
 
-  void writeError(Status s) {
-    setHeaders();
-    writeGrpcStatusTrailer(s);
+  synchronized void writeTrailer(Status status, Metadata trailer) {
+    if (isFinalResponseSent) return;
+    StringBuffer sb = new StringBuffer();
+    if (trailer != null) {
+      Map<String, String> ht = MetadataUtil.getHttpHeadersFromMetadata(trailer);
+      for (String key : ht.keySet()) {
+        sb.append(String.format("%s:%s\r\n", key, ht.get(key)));
+      }
+    }
+    sb.append(String.format("grpc-status:%d\r\n", status.getCode().value()));
+    if (status.getDescription() != null && !status.getDescription().isEmpty()) {
+      sb.append(String.format("grpc-message:%s\r\n", status.getDescription()));
+    }
+    LOG.fine("writing trailer: " + sb.toString());
+    writeResponse(sb.toString().getBytes(), MessageFramer.Type.TRAILER);
     writeOk();
   }
 
-  void writeGrpcStatusTrailer(Status status) {
-    String trailer = String.format("grpc-status:%d\r\ngrpc-message:%s\r\n",
-        status.getCode().value(), status.getDescription());
-    writeResponse(trailer.getBytes(), MessageFramer.Type.TRAILER);
+  synchronized void writeResponse(byte[] out) {
+    writeResponse(out, MessageFramer.Type.DATA);
   }
 
   private void writeResponse(byte[] out, MessageFramer.Type type) {
+    if (isFinalResponseSent) return;
     try {
       // PUNT multiple frames not handled
       byte[] prefix = new MessageFramer().getPrefix(out, type);
@@ -72,11 +94,12 @@ private void writeResponse(byte[] out, MessageFramer.Type type) {
       }
     } catch (IOException e) {
       // TODO what to do here?
-      LOG.info("can't write?");
+      LOG.warning("can't write?");
     }
   }
 
-  private void logPrefix(byte[] p) {
-    LOG.info("LENGTH : " + p.length + ", " + p[0] + ", " + p[1] + ", " + p[2] + ", " + p[3] + ", " + p[4]);
+  private void writeOk() {
+    mResp.setStatus(HttpServletResponse.SC_OK);
+    isFinalResponseSent = true;
   }
 }
diff --git a/src/connector/src/main/java/grpc/testing/EmptyOuterClass.java b/src/connector/src/main/java/grpc/testing/EmptyOuterClass.java
deleted file mode 100644
index 49263481..00000000
--- a/src/connector/src/main/java/grpc/testing/EmptyOuterClass.java
+++ /dev/null
@@ -1,462 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: grpc/testing/empty.proto
-
-package grpc.testing;
-
-/**
- *  ******* DO NOT EDIT *******
- * Generated by proto compiler from protos in the following dir
- *     https://github.com/grpc/grpc/tree/master/src/proto/grpc/testing
- */
-public final class EmptyOuterClass {
-  private EmptyOuterClass() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistryLite registry) {
-  }
-
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistry registry) {
-    registerAllExtensions(
-        (com.google.protobuf.ExtensionRegistryLite) registry);
-  }
-  public interface EmptyOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.Empty)
-      com.google.protobuf.MessageOrBuilder {
-  }
-  /**
-   * <pre>
-   * An empty message that you can re-use to avoid defining duplicated empty
-   * messages in your project. A typical example is to use it as argument or the
-   * return value of a service API. For instance:
-   *   service Foo {
-   *     rpc Bar (grpc.testing.Empty) returns (grpc.testing.Empty) { };
-   *   };
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.Empty}
-   */
-  public  static final class Empty extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.Empty)
-      EmptyOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use Empty.newBuilder() to construct.
-    private Empty(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private Empty() {
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private Empty(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.EmptyOuterClass.internal_static_grpc_testing_Empty_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.EmptyOuterClass.internal_static_grpc_testing_Empty_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.EmptyOuterClass.Empty.class, grpc.testing.EmptyOuterClass.Empty.Builder.class);
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.EmptyOuterClass.Empty)) {
-        return super.equals(obj);
-      }
-      grpc.testing.EmptyOuterClass.Empty other = (grpc.testing.EmptyOuterClass.Empty) obj;
-
-      boolean result = true;
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.EmptyOuterClass.Empty parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.EmptyOuterClass.Empty parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.EmptyOuterClass.Empty prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * An empty message that you can re-use to avoid defining duplicated empty
-     * messages in your project. A typical example is to use it as argument or the
-     * return value of a service API. For instance:
-     *   service Foo {
-     *     rpc Bar (grpc.testing.Empty) returns (grpc.testing.Empty) { };
-     *   };
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.Empty}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.Empty)
-        grpc.testing.EmptyOuterClass.EmptyOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.EmptyOuterClass.internal_static_grpc_testing_Empty_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.EmptyOuterClass.internal_static_grpc_testing_Empty_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.EmptyOuterClass.Empty.class, grpc.testing.EmptyOuterClass.Empty.Builder.class);
-      }
-
-      // Construct using grpc.testing.EmptyOuterClass.Empty.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.EmptyOuterClass.internal_static_grpc_testing_Empty_descriptor;
-      }
-
-      public grpc.testing.EmptyOuterClass.Empty getDefaultInstanceForType() {
-        return grpc.testing.EmptyOuterClass.Empty.getDefaultInstance();
-      }
-
-      public grpc.testing.EmptyOuterClass.Empty build() {
-        grpc.testing.EmptyOuterClass.Empty result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.EmptyOuterClass.Empty buildPartial() {
-        grpc.testing.EmptyOuterClass.Empty result = new grpc.testing.EmptyOuterClass.Empty(this);
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.EmptyOuterClass.Empty) {
-          return mergeFrom((grpc.testing.EmptyOuterClass.Empty)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.EmptyOuterClass.Empty other) {
-        if (other == grpc.testing.EmptyOuterClass.Empty.getDefaultInstance()) return this;
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.EmptyOuterClass.Empty parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.EmptyOuterClass.Empty) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.Empty)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.Empty)
-    private static final grpc.testing.EmptyOuterClass.Empty DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.EmptyOuterClass.Empty();
-    }
-
-    public static grpc.testing.EmptyOuterClass.Empty getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<Empty>
-        PARSER = new com.google.protobuf.AbstractParser<Empty>() {
-      public Empty parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new Empty(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<Empty> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<Empty> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.EmptyOuterClass.Empty getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_Empty_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_Empty_fieldAccessorTable;
-
-  public static com.google.protobuf.Descriptors.FileDescriptor
-      getDescriptor() {
-    return descriptor;
-  }
-  private static  com.google.protobuf.Descriptors.FileDescriptor
-      descriptor;
-  static {
-    java.lang.String[] descriptorData = {
-      "\n\030grpc/testing/empty.proto\022\014grpc.testing" +
-      "\"\007\n\005Emptyb\006proto3"
-    };
-    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
-        new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
-          public com.google.protobuf.ExtensionRegistry assignDescriptors(
-              com.google.protobuf.Descriptors.FileDescriptor root) {
-            descriptor = root;
-            return null;
-          }
-        };
-    com.google.protobuf.Descriptors.FileDescriptor
-      .internalBuildGeneratedFileFrom(descriptorData,
-        new com.google.protobuf.Descriptors.FileDescriptor[] {
-        }, assigner);
-    internal_static_grpc_testing_Empty_descriptor =
-      getDescriptor().getMessageTypes().get(0);
-    internal_static_grpc_testing_Empty_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_Empty_descriptor,
-        new java.lang.String[] { });
-  }
-
-  // @@protoc_insertion_point(outer_class_scope)
-}
diff --git a/src/connector/src/main/java/grpc/testing/Messages.java b/src/connector/src/main/java/grpc/testing/Messages.java
deleted file mode 100644
index a0cd53f7..00000000
--- a/src/connector/src/main/java/grpc/testing/Messages.java
+++ /dev/null
@@ -1,12640 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: grpc/testing/messages.proto
-
-package grpc.testing;
-
-/**
- * ******* DO NOT EDIT *******
- * Generated by proto compiler from protos in the following dir
- *     https://github.com/grpc/grpc/tree/master/src/proto/grpc/testing
- */
-public final class Messages {
-  private Messages() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistryLite registry) {
-  }
-
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistry registry) {
-    registerAllExtensions(
-        (com.google.protobuf.ExtensionRegistryLite) registry);
-  }
-  /**
-   * <pre>
-   * The type of payload that should be returned.
-   * </pre>
-   *
-   * Protobuf enum {@code grpc.testing.PayloadType}
-   */
-  public enum PayloadType
-      implements com.google.protobuf.ProtocolMessageEnum {
-    /**
-     * <pre>
-     * Compressable text format.
-     * </pre>
-     *
-     * <code>COMPRESSABLE = 0;</code>
-     */
-    COMPRESSABLE(0),
-    UNRECOGNIZED(-1),
-    ;
-
-    /**
-     * <pre>
-     * Compressable text format.
-     * </pre>
-     *
-     * <code>COMPRESSABLE = 0;</code>
-     */
-    public static final int COMPRESSABLE_VALUE = 0;
-
-
-    public final int getNumber() {
-      if (this == UNRECOGNIZED) {
-        throw new java.lang.IllegalArgumentException(
-            "Can't get the number of an unknown enum value.");
-      }
-      return value;
-    }
-
-    /**
-     * @deprecated Use {@link #forNumber(int)} instead.
-     */
-    @java.lang.Deprecated
-    public static PayloadType valueOf(int value) {
-      return forNumber(value);
-    }
-
-    public static PayloadType forNumber(int value) {
-      switch (value) {
-        case 0: return COMPRESSABLE;
-        default: return null;
-      }
-    }
-
-    public static com.google.protobuf.Internal.EnumLiteMap<PayloadType>
-        internalGetValueMap() {
-      return internalValueMap;
-    }
-    private static final com.google.protobuf.Internal.EnumLiteMap<
-        PayloadType> internalValueMap =
-          new com.google.protobuf.Internal.EnumLiteMap<PayloadType>() {
-            public PayloadType findValueByNumber(int number) {
-              return PayloadType.forNumber(number);
-            }
-          };
-
-    public final com.google.protobuf.Descriptors.EnumValueDescriptor
-        getValueDescriptor() {
-      return getDescriptor().getValues().get(ordinal());
-    }
-    public final com.google.protobuf.Descriptors.EnumDescriptor
-        getDescriptorForType() {
-      return getDescriptor();
-    }
-    public static final com.google.protobuf.Descriptors.EnumDescriptor
-        getDescriptor() {
-      return grpc.testing.Messages.getDescriptor().getEnumTypes().get(0);
-    }
-
-    private static final PayloadType[] VALUES = values();
-
-    public static PayloadType valueOf(
-        com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
-      if (desc.getType() != getDescriptor()) {
-        throw new java.lang.IllegalArgumentException(
-          "EnumValueDescriptor is not for this type.");
-      }
-      if (desc.getIndex() == -1) {
-        return UNRECOGNIZED;
-      }
-      return VALUES[desc.getIndex()];
-    }
-
-    private final int value;
-
-    private PayloadType(int value) {
-      this.value = value;
-    }
-
-    // @@protoc_insertion_point(enum_scope:grpc.testing.PayloadType)
-  }
-
-  /**
-   * <pre>
-   * The type of route that a client took to reach a server w.r.t. gRPCLB.
-   * The server must fill in "fallback" if it detects that the RPC reached
-   * the server via the "gRPCLB fallback" path, and "backend" if it detects
-   * that the RPC reached the server via "gRPCLB backend" path (i.e. if it got
-   * the address of this server from the gRPCLB server BalanceLoad RPC). Exactly
-   * how this detection is done is context and server dependent.
-   * </pre>
-   *
-   * Protobuf enum {@code grpc.testing.GrpclbRouteType}
-   */
-  public enum GrpclbRouteType
-      implements com.google.protobuf.ProtocolMessageEnum {
-    /**
-     * <pre>
-     * Server didn't detect the route that a client took to reach it.
-     * </pre>
-     *
-     * <code>GRPCLB_ROUTE_TYPE_UNKNOWN = 0;</code>
-     */
-    GRPCLB_ROUTE_TYPE_UNKNOWN(0),
-    /**
-     * <pre>
-     * Indicates that a client reached a server via gRPCLB fallback.
-     * </pre>
-     *
-     * <code>GRPCLB_ROUTE_TYPE_FALLBACK = 1;</code>
-     */
-    GRPCLB_ROUTE_TYPE_FALLBACK(1),
-    /**
-     * <pre>
-     * Indicates that a client reached a server as a gRPCLB-given backend.
-     * </pre>
-     *
-     * <code>GRPCLB_ROUTE_TYPE_BACKEND = 2;</code>
-     */
-    GRPCLB_ROUTE_TYPE_BACKEND(2),
-    UNRECOGNIZED(-1),
-    ;
-
-    /**
-     * <pre>
-     * Server didn't detect the route that a client took to reach it.
-     * </pre>
-     *
-     * <code>GRPCLB_ROUTE_TYPE_UNKNOWN = 0;</code>
-     */
-    public static final int GRPCLB_ROUTE_TYPE_UNKNOWN_VALUE = 0;
-    /**
-     * <pre>
-     * Indicates that a client reached a server via gRPCLB fallback.
-     * </pre>
-     *
-     * <code>GRPCLB_ROUTE_TYPE_FALLBACK = 1;</code>
-     */
-    public static final int GRPCLB_ROUTE_TYPE_FALLBACK_VALUE = 1;
-    /**
-     * <pre>
-     * Indicates that a client reached a server as a gRPCLB-given backend.
-     * </pre>
-     *
-     * <code>GRPCLB_ROUTE_TYPE_BACKEND = 2;</code>
-     */
-    public static final int GRPCLB_ROUTE_TYPE_BACKEND_VALUE = 2;
-
-
-    public final int getNumber() {
-      if (this == UNRECOGNIZED) {
-        throw new java.lang.IllegalArgumentException(
-            "Can't get the number of an unknown enum value.");
-      }
-      return value;
-    }
-
-    /**
-     * @deprecated Use {@link #forNumber(int)} instead.
-     */
-    @java.lang.Deprecated
-    public static GrpclbRouteType valueOf(int value) {
-      return forNumber(value);
-    }
-
-    public static GrpclbRouteType forNumber(int value) {
-      switch (value) {
-        case 0: return GRPCLB_ROUTE_TYPE_UNKNOWN;
-        case 1: return GRPCLB_ROUTE_TYPE_FALLBACK;
-        case 2: return GRPCLB_ROUTE_TYPE_BACKEND;
-        default: return null;
-      }
-    }
-
-    public static com.google.protobuf.Internal.EnumLiteMap<GrpclbRouteType>
-        internalGetValueMap() {
-      return internalValueMap;
-    }
-    private static final com.google.protobuf.Internal.EnumLiteMap<
-        GrpclbRouteType> internalValueMap =
-          new com.google.protobuf.Internal.EnumLiteMap<GrpclbRouteType>() {
-            public GrpclbRouteType findValueByNumber(int number) {
-              return GrpclbRouteType.forNumber(number);
-            }
-          };
-
-    public final com.google.protobuf.Descriptors.EnumValueDescriptor
-        getValueDescriptor() {
-      return getDescriptor().getValues().get(ordinal());
-    }
-    public final com.google.protobuf.Descriptors.EnumDescriptor
-        getDescriptorForType() {
-      return getDescriptor();
-    }
-    public static final com.google.protobuf.Descriptors.EnumDescriptor
-        getDescriptor() {
-      return grpc.testing.Messages.getDescriptor().getEnumTypes().get(1);
-    }
-
-    private static final GrpclbRouteType[] VALUES = values();
-
-    public static GrpclbRouteType valueOf(
-        com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
-      if (desc.getType() != getDescriptor()) {
-        throw new java.lang.IllegalArgumentException(
-          "EnumValueDescriptor is not for this type.");
-      }
-      if (desc.getIndex() == -1) {
-        return UNRECOGNIZED;
-      }
-      return VALUES[desc.getIndex()];
-    }
-
-    private final int value;
-
-    private GrpclbRouteType(int value) {
-      this.value = value;
-    }
-
-    // @@protoc_insertion_point(enum_scope:grpc.testing.GrpclbRouteType)
-  }
-
-  public interface BoolValueOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.BoolValue)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * The bool value.
-     * </pre>
-     *
-     * <code>bool value = 1;</code>
-     */
-    boolean getValue();
-  }
-  /**
-   * <pre>
-   * TODO(dgq): Go back to using well-known types once
-   * https://github.com/grpc/grpc/issues/6980 has been fixed.
-   * import "google/protobuf/wrappers.proto";
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.BoolValue}
-   */
-  public  static final class BoolValue extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.BoolValue)
-      BoolValueOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use BoolValue.newBuilder() to construct.
-    private BoolValue(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private BoolValue() {
-      value_ = false;
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private BoolValue(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-
-              value_ = input.readBool();
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_BoolValue_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_BoolValue_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.BoolValue.class, grpc.testing.Messages.BoolValue.Builder.class);
-    }
-
-    public static final int VALUE_FIELD_NUMBER = 1;
-    private boolean value_;
-    /**
-     * <pre>
-     * The bool value.
-     * </pre>
-     *
-     * <code>bool value = 1;</code>
-     */
-    public boolean getValue() {
-      return value_;
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (value_ != false) {
-        output.writeBool(1, value_);
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (value_ != false) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBoolSize(1, value_);
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.BoolValue)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.BoolValue other = (grpc.testing.Messages.BoolValue) obj;
-
-      boolean result = true;
-      result = result && (getValue()
-          == other.getValue());
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + VALUE_FIELD_NUMBER;
-      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
-          getValue());
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.BoolValue parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.BoolValue parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.BoolValue parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.BoolValue parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.BoolValue parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.BoolValue parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.BoolValue parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.BoolValue parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.BoolValue parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.BoolValue parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.BoolValue parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.BoolValue parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.BoolValue prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * TODO(dgq): Go back to using well-known types once
-     * https://github.com/grpc/grpc/issues/6980 has been fixed.
-     * import "google/protobuf/wrappers.proto";
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.BoolValue}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.BoolValue)
-        grpc.testing.Messages.BoolValueOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_BoolValue_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_BoolValue_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.BoolValue.class, grpc.testing.Messages.BoolValue.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.BoolValue.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        value_ = false;
-
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_BoolValue_descriptor;
-      }
-
-      public grpc.testing.Messages.BoolValue getDefaultInstanceForType() {
-        return grpc.testing.Messages.BoolValue.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.BoolValue build() {
-        grpc.testing.Messages.BoolValue result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.BoolValue buildPartial() {
-        grpc.testing.Messages.BoolValue result = new grpc.testing.Messages.BoolValue(this);
-        result.value_ = value_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.BoolValue) {
-          return mergeFrom((grpc.testing.Messages.BoolValue)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.BoolValue other) {
-        if (other == grpc.testing.Messages.BoolValue.getDefaultInstance()) return this;
-        if (other.getValue() != false) {
-          setValue(other.getValue());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.BoolValue parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.BoolValue) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private boolean value_ ;
-      /**
-       * <pre>
-       * The bool value.
-       * </pre>
-       *
-       * <code>bool value = 1;</code>
-       */
-      public boolean getValue() {
-        return value_;
-      }
-      /**
-       * <pre>
-       * The bool value.
-       * </pre>
-       *
-       * <code>bool value = 1;</code>
-       */
-      public Builder setValue(boolean value) {
-        
-        value_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * The bool value.
-       * </pre>
-       *
-       * <code>bool value = 1;</code>
-       */
-      public Builder clearValue() {
-        
-        value_ = false;
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.BoolValue)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.BoolValue)
-    private static final grpc.testing.Messages.BoolValue DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.BoolValue();
-    }
-
-    public static grpc.testing.Messages.BoolValue getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<BoolValue>
-        PARSER = new com.google.protobuf.AbstractParser<BoolValue>() {
-      public BoolValue parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new BoolValue(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<BoolValue> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<BoolValue> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.BoolValue getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface PayloadOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.Payload)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * The type of data in body.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType type = 1;</code>
-     */
-    int getTypeValue();
-    /**
-     * <pre>
-     * The type of data in body.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType type = 1;</code>
-     */
-    grpc.testing.Messages.PayloadType getType();
-
-    /**
-     * <pre>
-     * Primary contents of payload.
-     * </pre>
-     *
-     * <code>bytes body = 2;</code>
-     */
-    com.google.protobuf.ByteString getBody();
-  }
-  /**
-   * <pre>
-   * A block of data, to simply increase gRPC message size.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.Payload}
-   */
-  public  static final class Payload extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.Payload)
-      PayloadOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use Payload.newBuilder() to construct.
-    private Payload(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private Payload() {
-      type_ = 0;
-      body_ = com.google.protobuf.ByteString.EMPTY;
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private Payload(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-              int rawValue = input.readEnum();
-
-              type_ = rawValue;
-              break;
-            }
-            case 18: {
-
-              body_ = input.readBytes();
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_Payload_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_Payload_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.Payload.class, grpc.testing.Messages.Payload.Builder.class);
-    }
-
-    public static final int TYPE_FIELD_NUMBER = 1;
-    private int type_;
-    /**
-     * <pre>
-     * The type of data in body.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType type = 1;</code>
-     */
-    public int getTypeValue() {
-      return type_;
-    }
-    /**
-     * <pre>
-     * The type of data in body.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType type = 1;</code>
-     */
-    public grpc.testing.Messages.PayloadType getType() {
-      grpc.testing.Messages.PayloadType result = grpc.testing.Messages.PayloadType.valueOf(type_);
-      return result == null ? grpc.testing.Messages.PayloadType.UNRECOGNIZED : result;
-    }
-
-    public static final int BODY_FIELD_NUMBER = 2;
-    private com.google.protobuf.ByteString body_;
-    /**
-     * <pre>
-     * Primary contents of payload.
-     * </pre>
-     *
-     * <code>bytes body = 2;</code>
-     */
-    public com.google.protobuf.ByteString getBody() {
-      return body_;
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (type_ != grpc.testing.Messages.PayloadType.COMPRESSABLE.getNumber()) {
-        output.writeEnum(1, type_);
-      }
-      if (!body_.isEmpty()) {
-        output.writeBytes(2, body_);
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (type_ != grpc.testing.Messages.PayloadType.COMPRESSABLE.getNumber()) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(1, type_);
-      }
-      if (!body_.isEmpty()) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(2, body_);
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.Payload)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.Payload other = (grpc.testing.Messages.Payload) obj;
-
-      boolean result = true;
-      result = result && type_ == other.type_;
-      result = result && getBody()
-          .equals(other.getBody());
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + TYPE_FIELD_NUMBER;
-      hash = (53 * hash) + type_;
-      hash = (37 * hash) + BODY_FIELD_NUMBER;
-      hash = (53 * hash) + getBody().hashCode();
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.Payload parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.Payload parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.Payload parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.Payload parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.Payload parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.Payload parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.Payload parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.Payload parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.Payload parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.Payload parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.Payload parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.Payload parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.Payload prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * A block of data, to simply increase gRPC message size.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.Payload}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.Payload)
-        grpc.testing.Messages.PayloadOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_Payload_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_Payload_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.Payload.class, grpc.testing.Messages.Payload.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.Payload.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        type_ = 0;
-
-        body_ = com.google.protobuf.ByteString.EMPTY;
-
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_Payload_descriptor;
-      }
-
-      public grpc.testing.Messages.Payload getDefaultInstanceForType() {
-        return grpc.testing.Messages.Payload.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.Payload build() {
-        grpc.testing.Messages.Payload result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.Payload buildPartial() {
-        grpc.testing.Messages.Payload result = new grpc.testing.Messages.Payload(this);
-        result.type_ = type_;
-        result.body_ = body_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.Payload) {
-          return mergeFrom((grpc.testing.Messages.Payload)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.Payload other) {
-        if (other == grpc.testing.Messages.Payload.getDefaultInstance()) return this;
-        if (other.type_ != 0) {
-          setTypeValue(other.getTypeValue());
-        }
-        if (other.getBody() != com.google.protobuf.ByteString.EMPTY) {
-          setBody(other.getBody());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.Payload parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.Payload) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private int type_ = 0;
-      /**
-       * <pre>
-       * The type of data in body.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType type = 1;</code>
-       */
-      public int getTypeValue() {
-        return type_;
-      }
-      /**
-       * <pre>
-       * The type of data in body.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType type = 1;</code>
-       */
-      public Builder setTypeValue(int value) {
-        type_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * The type of data in body.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType type = 1;</code>
-       */
-      public grpc.testing.Messages.PayloadType getType() {
-        grpc.testing.Messages.PayloadType result = grpc.testing.Messages.PayloadType.valueOf(type_);
-        return result == null ? grpc.testing.Messages.PayloadType.UNRECOGNIZED : result;
-      }
-      /**
-       * <pre>
-       * The type of data in body.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType type = 1;</code>
-       */
-      public Builder setType(grpc.testing.Messages.PayloadType value) {
-        if (value == null) {
-          throw new NullPointerException();
-        }
-        
-        type_ = value.getNumber();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * The type of data in body.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType type = 1;</code>
-       */
-      public Builder clearType() {
-        
-        type_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private com.google.protobuf.ByteString body_ = com.google.protobuf.ByteString.EMPTY;
-      /**
-       * <pre>
-       * Primary contents of payload.
-       * </pre>
-       *
-       * <code>bytes body = 2;</code>
-       */
-      public com.google.protobuf.ByteString getBody() {
-        return body_;
-      }
-      /**
-       * <pre>
-       * Primary contents of payload.
-       * </pre>
-       *
-       * <code>bytes body = 2;</code>
-       */
-      public Builder setBody(com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  
-        body_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Primary contents of payload.
-       * </pre>
-       *
-       * <code>bytes body = 2;</code>
-       */
-      public Builder clearBody() {
-        
-        body_ = getDefaultInstance().getBody();
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.Payload)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.Payload)
-    private static final grpc.testing.Messages.Payload DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.Payload();
-    }
-
-    public static grpc.testing.Messages.Payload getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<Payload>
-        PARSER = new com.google.protobuf.AbstractParser<Payload>() {
-      public Payload parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new Payload(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<Payload> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<Payload> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.Payload getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface EchoStatusOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.EchoStatus)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <code>int32 code = 1;</code>
-     */
-    int getCode();
-
-    /**
-     * <code>string message = 2;</code>
-     */
-    java.lang.String getMessage();
-    /**
-     * <code>string message = 2;</code>
-     */
-    com.google.protobuf.ByteString
-        getMessageBytes();
-  }
-  /**
-   * <pre>
-   * A protobuf representation for grpc status. This is used by test
-   * clients to specify a status that the server should attempt to return.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.EchoStatus}
-   */
-  public  static final class EchoStatus extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.EchoStatus)
-      EchoStatusOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use EchoStatus.newBuilder() to construct.
-    private EchoStatus(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private EchoStatus() {
-      code_ = 0;
-      message_ = "";
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private EchoStatus(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-
-              code_ = input.readInt32();
-              break;
-            }
-            case 18: {
-              java.lang.String s = input.readStringRequireUtf8();
-
-              message_ = s;
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_EchoStatus_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_EchoStatus_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.EchoStatus.class, grpc.testing.Messages.EchoStatus.Builder.class);
-    }
-
-    public static final int CODE_FIELD_NUMBER = 1;
-    private int code_;
-    /**
-     * <code>int32 code = 1;</code>
-     */
-    public int getCode() {
-      return code_;
-    }
-
-    public static final int MESSAGE_FIELD_NUMBER = 2;
-    private volatile java.lang.Object message_;
-    /**
-     * <code>string message = 2;</code>
-     */
-    public java.lang.String getMessage() {
-      java.lang.Object ref = message_;
-      if (ref instanceof java.lang.String) {
-        return (java.lang.String) ref;
-      } else {
-        com.google.protobuf.ByteString bs = 
-            (com.google.protobuf.ByteString) ref;
-        java.lang.String s = bs.toStringUtf8();
-        message_ = s;
-        return s;
-      }
-    }
-    /**
-     * <code>string message = 2;</code>
-     */
-    public com.google.protobuf.ByteString
-        getMessageBytes() {
-      java.lang.Object ref = message_;
-      if (ref instanceof java.lang.String) {
-        com.google.protobuf.ByteString b = 
-            com.google.protobuf.ByteString.copyFromUtf8(
-                (java.lang.String) ref);
-        message_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
-      }
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (code_ != 0) {
-        output.writeInt32(1, code_);
-      }
-      if (!getMessageBytes().isEmpty()) {
-        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, message_);
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (code_ != 0) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(1, code_);
-      }
-      if (!getMessageBytes().isEmpty()) {
-        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, message_);
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.EchoStatus)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.EchoStatus other = (grpc.testing.Messages.EchoStatus) obj;
-
-      boolean result = true;
-      result = result && (getCode()
-          == other.getCode());
-      result = result && getMessage()
-          .equals(other.getMessage());
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + CODE_FIELD_NUMBER;
-      hash = (53 * hash) + getCode();
-      hash = (37 * hash) + MESSAGE_FIELD_NUMBER;
-      hash = (53 * hash) + getMessage().hashCode();
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.EchoStatus parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.EchoStatus parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.EchoStatus parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.EchoStatus parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.EchoStatus parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.EchoStatus parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.EchoStatus parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.EchoStatus parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.EchoStatus parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.EchoStatus parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.EchoStatus parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.EchoStatus parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.EchoStatus prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * A protobuf representation for grpc status. This is used by test
-     * clients to specify a status that the server should attempt to return.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.EchoStatus}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.EchoStatus)
-        grpc.testing.Messages.EchoStatusOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_EchoStatus_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_EchoStatus_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.EchoStatus.class, grpc.testing.Messages.EchoStatus.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.EchoStatus.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        code_ = 0;
-
-        message_ = "";
-
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_EchoStatus_descriptor;
-      }
-
-      public grpc.testing.Messages.EchoStatus getDefaultInstanceForType() {
-        return grpc.testing.Messages.EchoStatus.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.EchoStatus build() {
-        grpc.testing.Messages.EchoStatus result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.EchoStatus buildPartial() {
-        grpc.testing.Messages.EchoStatus result = new grpc.testing.Messages.EchoStatus(this);
-        result.code_ = code_;
-        result.message_ = message_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.EchoStatus) {
-          return mergeFrom((grpc.testing.Messages.EchoStatus)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.EchoStatus other) {
-        if (other == grpc.testing.Messages.EchoStatus.getDefaultInstance()) return this;
-        if (other.getCode() != 0) {
-          setCode(other.getCode());
-        }
-        if (!other.getMessage().isEmpty()) {
-          message_ = other.message_;
-          onChanged();
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.EchoStatus parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.EchoStatus) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private int code_ ;
-      /**
-       * <code>int32 code = 1;</code>
-       */
-      public int getCode() {
-        return code_;
-      }
-      /**
-       * <code>int32 code = 1;</code>
-       */
-      public Builder setCode(int value) {
-        
-        code_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>int32 code = 1;</code>
-       */
-      public Builder clearCode() {
-        
-        code_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private java.lang.Object message_ = "";
-      /**
-       * <code>string message = 2;</code>
-       */
-      public java.lang.String getMessage() {
-        java.lang.Object ref = message_;
-        if (!(ref instanceof java.lang.String)) {
-          com.google.protobuf.ByteString bs =
-              (com.google.protobuf.ByteString) ref;
-          java.lang.String s = bs.toStringUtf8();
-          message_ = s;
-          return s;
-        } else {
-          return (java.lang.String) ref;
-        }
-      }
-      /**
-       * <code>string message = 2;</code>
-       */
-      public com.google.protobuf.ByteString
-          getMessageBytes() {
-        java.lang.Object ref = message_;
-        if (ref instanceof String) {
-          com.google.protobuf.ByteString b = 
-              com.google.protobuf.ByteString.copyFromUtf8(
-                  (java.lang.String) ref);
-          message_ = b;
-          return b;
-        } else {
-          return (com.google.protobuf.ByteString) ref;
-        }
-      }
-      /**
-       * <code>string message = 2;</code>
-       */
-      public Builder setMessage(
-          java.lang.String value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  
-        message_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>string message = 2;</code>
-       */
-      public Builder clearMessage() {
-        
-        message_ = getDefaultInstance().getMessage();
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>string message = 2;</code>
-       */
-      public Builder setMessageBytes(
-          com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  checkByteStringIsUtf8(value);
-        
-        message_ = value;
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.EchoStatus)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.EchoStatus)
-    private static final grpc.testing.Messages.EchoStatus DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.EchoStatus();
-    }
-
-    public static grpc.testing.Messages.EchoStatus getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<EchoStatus>
-        PARSER = new com.google.protobuf.AbstractParser<EchoStatus>() {
-      public EchoStatus parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new EchoStatus(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<EchoStatus> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<EchoStatus> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.EchoStatus getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface SimpleRequestOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.SimpleRequest)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, server randomly chooses one from other formats.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    int getResponseTypeValue();
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, server randomly chooses one from other formats.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    grpc.testing.Messages.PayloadType getResponseType();
-
-    /**
-     * <pre>
-     * Desired payload size in the response from the server.
-     * </pre>
-     *
-     * <code>int32 response_size = 2;</code>
-     */
-    int getResponseSize();
-
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    boolean hasPayload();
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    grpc.testing.Messages.Payload getPayload();
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder();
-
-    /**
-     * <pre>
-     * Whether SimpleResponse should include username.
-     * </pre>
-     *
-     * <code>bool fill_username = 4;</code>
-     */
-    boolean getFillUsername();
-
-    /**
-     * <pre>
-     * Whether SimpleResponse should include OAuth scope.
-     * </pre>
-     *
-     * <code>bool fill_oauth_scope = 5;</code>
-     */
-    boolean getFillOauthScope();
-
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-     */
-    boolean hasResponseCompressed();
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-     */
-    grpc.testing.Messages.BoolValue getResponseCompressed();
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-     */
-    grpc.testing.Messages.BoolValueOrBuilder getResponseCompressedOrBuilder();
-
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    boolean hasResponseStatus();
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    grpc.testing.Messages.EchoStatus getResponseStatus();
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    grpc.testing.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder();
-
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-     */
-    boolean hasExpectCompressed();
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-     */
-    grpc.testing.Messages.BoolValue getExpectCompressed();
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-     */
-    grpc.testing.Messages.BoolValueOrBuilder getExpectCompressedOrBuilder();
-
-    /**
-     * <pre>
-     * Whether SimpleResponse should include server_id.
-     * </pre>
-     *
-     * <code>bool fill_server_id = 9;</code>
-     */
-    boolean getFillServerId();
-
-    /**
-     * <pre>
-     * Whether SimpleResponse should include grpclb_route_type.
-     * </pre>
-     *
-     * <code>bool fill_grpclb_route_type = 10;</code>
-     */
-    boolean getFillGrpclbRouteType();
-  }
-  /**
-   * <pre>
-   * Unary request.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.SimpleRequest}
-   */
-  public  static final class SimpleRequest extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.SimpleRequest)
-      SimpleRequestOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use SimpleRequest.newBuilder() to construct.
-    private SimpleRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private SimpleRequest() {
-      responseType_ = 0;
-      responseSize_ = 0;
-      fillUsername_ = false;
-      fillOauthScope_ = false;
-      fillServerId_ = false;
-      fillGrpclbRouteType_ = false;
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private SimpleRequest(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-              int rawValue = input.readEnum();
-
-              responseType_ = rawValue;
-              break;
-            }
-            case 16: {
-
-              responseSize_ = input.readInt32();
-              break;
-            }
-            case 26: {
-              grpc.testing.Messages.Payload.Builder subBuilder = null;
-              if (payload_ != null) {
-                subBuilder = payload_.toBuilder();
-              }
-              payload_ = input.readMessage(grpc.testing.Messages.Payload.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(payload_);
-                payload_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-            case 32: {
-
-              fillUsername_ = input.readBool();
-              break;
-            }
-            case 40: {
-
-              fillOauthScope_ = input.readBool();
-              break;
-            }
-            case 50: {
-              grpc.testing.Messages.BoolValue.Builder subBuilder = null;
-              if (responseCompressed_ != null) {
-                subBuilder = responseCompressed_.toBuilder();
-              }
-              responseCompressed_ = input.readMessage(grpc.testing.Messages.BoolValue.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(responseCompressed_);
-                responseCompressed_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-            case 58: {
-              grpc.testing.Messages.EchoStatus.Builder subBuilder = null;
-              if (responseStatus_ != null) {
-                subBuilder = responseStatus_.toBuilder();
-              }
-              responseStatus_ = input.readMessage(grpc.testing.Messages.EchoStatus.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(responseStatus_);
-                responseStatus_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-            case 66: {
-              grpc.testing.Messages.BoolValue.Builder subBuilder = null;
-              if (expectCompressed_ != null) {
-                subBuilder = expectCompressed_.toBuilder();
-              }
-              expectCompressed_ = input.readMessage(grpc.testing.Messages.BoolValue.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(expectCompressed_);
-                expectCompressed_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-            case 72: {
-
-              fillServerId_ = input.readBool();
-              break;
-            }
-            case 80: {
-
-              fillGrpclbRouteType_ = input.readBool();
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_SimpleRequest_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_SimpleRequest_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.SimpleRequest.class, grpc.testing.Messages.SimpleRequest.Builder.class);
-    }
-
-    public static final int RESPONSE_TYPE_FIELD_NUMBER = 1;
-    private int responseType_;
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, server randomly chooses one from other formats.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    public int getResponseTypeValue() {
-      return responseType_;
-    }
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, server randomly chooses one from other formats.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    public grpc.testing.Messages.PayloadType getResponseType() {
-      grpc.testing.Messages.PayloadType result = grpc.testing.Messages.PayloadType.valueOf(responseType_);
-      return result == null ? grpc.testing.Messages.PayloadType.UNRECOGNIZED : result;
-    }
-
-    public static final int RESPONSE_SIZE_FIELD_NUMBER = 2;
-    private int responseSize_;
-    /**
-     * <pre>
-     * Desired payload size in the response from the server.
-     * </pre>
-     *
-     * <code>int32 response_size = 2;</code>
-     */
-    public int getResponseSize() {
-      return responseSize_;
-    }
-
-    public static final int PAYLOAD_FIELD_NUMBER = 3;
-    private grpc.testing.Messages.Payload payload_;
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public boolean hasPayload() {
-      return payload_ != null;
-    }
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public grpc.testing.Messages.Payload getPayload() {
-      return payload_ == null ? grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-    }
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-      return getPayload();
-    }
-
-    public static final int FILL_USERNAME_FIELD_NUMBER = 4;
-    private boolean fillUsername_;
-    /**
-     * <pre>
-     * Whether SimpleResponse should include username.
-     * </pre>
-     *
-     * <code>bool fill_username = 4;</code>
-     */
-    public boolean getFillUsername() {
-      return fillUsername_;
-    }
-
-    public static final int FILL_OAUTH_SCOPE_FIELD_NUMBER = 5;
-    private boolean fillOauthScope_;
-    /**
-     * <pre>
-     * Whether SimpleResponse should include OAuth scope.
-     * </pre>
-     *
-     * <code>bool fill_oauth_scope = 5;</code>
-     */
-    public boolean getFillOauthScope() {
-      return fillOauthScope_;
-    }
-
-    public static final int RESPONSE_COMPRESSED_FIELD_NUMBER = 6;
-    private grpc.testing.Messages.BoolValue responseCompressed_;
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-     */
-    public boolean hasResponseCompressed() {
-      return responseCompressed_ != null;
-    }
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-     */
-    public grpc.testing.Messages.BoolValue getResponseCompressed() {
-      return responseCompressed_ == null ? grpc.testing.Messages.BoolValue.getDefaultInstance() : responseCompressed_;
-    }
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-     */
-    public grpc.testing.Messages.BoolValueOrBuilder getResponseCompressedOrBuilder() {
-      return getResponseCompressed();
-    }
-
-    public static final int RESPONSE_STATUS_FIELD_NUMBER = 7;
-    private grpc.testing.Messages.EchoStatus responseStatus_;
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public boolean hasResponseStatus() {
-      return responseStatus_ != null;
-    }
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public grpc.testing.Messages.EchoStatus getResponseStatus() {
-      return responseStatus_ == null ? grpc.testing.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-    }
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public grpc.testing.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder() {
-      return getResponseStatus();
-    }
-
-    public static final int EXPECT_COMPRESSED_FIELD_NUMBER = 8;
-    private grpc.testing.Messages.BoolValue expectCompressed_;
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-     */
-    public boolean hasExpectCompressed() {
-      return expectCompressed_ != null;
-    }
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-     */
-    public grpc.testing.Messages.BoolValue getExpectCompressed() {
-      return expectCompressed_ == null ? grpc.testing.Messages.BoolValue.getDefaultInstance() : expectCompressed_;
-    }
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-     */
-    public grpc.testing.Messages.BoolValueOrBuilder getExpectCompressedOrBuilder() {
-      return getExpectCompressed();
-    }
-
-    public static final int FILL_SERVER_ID_FIELD_NUMBER = 9;
-    private boolean fillServerId_;
-    /**
-     * <pre>
-     * Whether SimpleResponse should include server_id.
-     * </pre>
-     *
-     * <code>bool fill_server_id = 9;</code>
-     */
-    public boolean getFillServerId() {
-      return fillServerId_;
-    }
-
-    public static final int FILL_GRPCLB_ROUTE_TYPE_FIELD_NUMBER = 10;
-    private boolean fillGrpclbRouteType_;
-    /**
-     * <pre>
-     * Whether SimpleResponse should include grpclb_route_type.
-     * </pre>
-     *
-     * <code>bool fill_grpclb_route_type = 10;</code>
-     */
-    public boolean getFillGrpclbRouteType() {
-      return fillGrpclbRouteType_;
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (responseType_ != grpc.testing.Messages.PayloadType.COMPRESSABLE.getNumber()) {
-        output.writeEnum(1, responseType_);
-      }
-      if (responseSize_ != 0) {
-        output.writeInt32(2, responseSize_);
-      }
-      if (payload_ != null) {
-        output.writeMessage(3, getPayload());
-      }
-      if (fillUsername_ != false) {
-        output.writeBool(4, fillUsername_);
-      }
-      if (fillOauthScope_ != false) {
-        output.writeBool(5, fillOauthScope_);
-      }
-      if (responseCompressed_ != null) {
-        output.writeMessage(6, getResponseCompressed());
-      }
-      if (responseStatus_ != null) {
-        output.writeMessage(7, getResponseStatus());
-      }
-      if (expectCompressed_ != null) {
-        output.writeMessage(8, getExpectCompressed());
-      }
-      if (fillServerId_ != false) {
-        output.writeBool(9, fillServerId_);
-      }
-      if (fillGrpclbRouteType_ != false) {
-        output.writeBool(10, fillGrpclbRouteType_);
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (responseType_ != grpc.testing.Messages.PayloadType.COMPRESSABLE.getNumber()) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(1, responseType_);
-      }
-      if (responseSize_ != 0) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(2, responseSize_);
-      }
-      if (payload_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(3, getPayload());
-      }
-      if (fillUsername_ != false) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBoolSize(4, fillUsername_);
-      }
-      if (fillOauthScope_ != false) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBoolSize(5, fillOauthScope_);
-      }
-      if (responseCompressed_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(6, getResponseCompressed());
-      }
-      if (responseStatus_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(7, getResponseStatus());
-      }
-      if (expectCompressed_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(8, getExpectCompressed());
-      }
-      if (fillServerId_ != false) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBoolSize(9, fillServerId_);
-      }
-      if (fillGrpclbRouteType_ != false) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBoolSize(10, fillGrpclbRouteType_);
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.SimpleRequest)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.SimpleRequest other = (grpc.testing.Messages.SimpleRequest) obj;
-
-      boolean result = true;
-      result = result && responseType_ == other.responseType_;
-      result = result && (getResponseSize()
-          == other.getResponseSize());
-      result = result && (hasPayload() == other.hasPayload());
-      if (hasPayload()) {
-        result = result && getPayload()
-            .equals(other.getPayload());
-      }
-      result = result && (getFillUsername()
-          == other.getFillUsername());
-      result = result && (getFillOauthScope()
-          == other.getFillOauthScope());
-      result = result && (hasResponseCompressed() == other.hasResponseCompressed());
-      if (hasResponseCompressed()) {
-        result = result && getResponseCompressed()
-            .equals(other.getResponseCompressed());
-      }
-      result = result && (hasResponseStatus() == other.hasResponseStatus());
-      if (hasResponseStatus()) {
-        result = result && getResponseStatus()
-            .equals(other.getResponseStatus());
-      }
-      result = result && (hasExpectCompressed() == other.hasExpectCompressed());
-      if (hasExpectCompressed()) {
-        result = result && getExpectCompressed()
-            .equals(other.getExpectCompressed());
-      }
-      result = result && (getFillServerId()
-          == other.getFillServerId());
-      result = result && (getFillGrpclbRouteType()
-          == other.getFillGrpclbRouteType());
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + RESPONSE_TYPE_FIELD_NUMBER;
-      hash = (53 * hash) + responseType_;
-      hash = (37 * hash) + RESPONSE_SIZE_FIELD_NUMBER;
-      hash = (53 * hash) + getResponseSize();
-      if (hasPayload()) {
-        hash = (37 * hash) + PAYLOAD_FIELD_NUMBER;
-        hash = (53 * hash) + getPayload().hashCode();
-      }
-      hash = (37 * hash) + FILL_USERNAME_FIELD_NUMBER;
-      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
-          getFillUsername());
-      hash = (37 * hash) + FILL_OAUTH_SCOPE_FIELD_NUMBER;
-      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
-          getFillOauthScope());
-      if (hasResponseCompressed()) {
-        hash = (37 * hash) + RESPONSE_COMPRESSED_FIELD_NUMBER;
-        hash = (53 * hash) + getResponseCompressed().hashCode();
-      }
-      if (hasResponseStatus()) {
-        hash = (37 * hash) + RESPONSE_STATUS_FIELD_NUMBER;
-        hash = (53 * hash) + getResponseStatus().hashCode();
-      }
-      if (hasExpectCompressed()) {
-        hash = (37 * hash) + EXPECT_COMPRESSED_FIELD_NUMBER;
-        hash = (53 * hash) + getExpectCompressed().hashCode();
-      }
-      hash = (37 * hash) + FILL_SERVER_ID_FIELD_NUMBER;
-      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
-          getFillServerId());
-      hash = (37 * hash) + FILL_GRPCLB_ROUTE_TYPE_FIELD_NUMBER;
-      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
-          getFillGrpclbRouteType());
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.SimpleRequest parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.SimpleRequest parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.SimpleRequest prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * Unary request.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.SimpleRequest}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.SimpleRequest)
-        grpc.testing.Messages.SimpleRequestOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_SimpleRequest_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_SimpleRequest_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.SimpleRequest.class, grpc.testing.Messages.SimpleRequest.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.SimpleRequest.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        responseType_ = 0;
-
-        responseSize_ = 0;
-
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-        fillUsername_ = false;
-
-        fillOauthScope_ = false;
-
-        if (responseCompressedBuilder_ == null) {
-          responseCompressed_ = null;
-        } else {
-          responseCompressed_ = null;
-          responseCompressedBuilder_ = null;
-        }
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = null;
-        } else {
-          responseStatus_ = null;
-          responseStatusBuilder_ = null;
-        }
-        if (expectCompressedBuilder_ == null) {
-          expectCompressed_ = null;
-        } else {
-          expectCompressed_ = null;
-          expectCompressedBuilder_ = null;
-        }
-        fillServerId_ = false;
-
-        fillGrpclbRouteType_ = false;
-
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_SimpleRequest_descriptor;
-      }
-
-      public grpc.testing.Messages.SimpleRequest getDefaultInstanceForType() {
-        return grpc.testing.Messages.SimpleRequest.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.SimpleRequest build() {
-        grpc.testing.Messages.SimpleRequest result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.SimpleRequest buildPartial() {
-        grpc.testing.Messages.SimpleRequest result = new grpc.testing.Messages.SimpleRequest(this);
-        result.responseType_ = responseType_;
-        result.responseSize_ = responseSize_;
-        if (payloadBuilder_ == null) {
-          result.payload_ = payload_;
-        } else {
-          result.payload_ = payloadBuilder_.build();
-        }
-        result.fillUsername_ = fillUsername_;
-        result.fillOauthScope_ = fillOauthScope_;
-        if (responseCompressedBuilder_ == null) {
-          result.responseCompressed_ = responseCompressed_;
-        } else {
-          result.responseCompressed_ = responseCompressedBuilder_.build();
-        }
-        if (responseStatusBuilder_ == null) {
-          result.responseStatus_ = responseStatus_;
-        } else {
-          result.responseStatus_ = responseStatusBuilder_.build();
-        }
-        if (expectCompressedBuilder_ == null) {
-          result.expectCompressed_ = expectCompressed_;
-        } else {
-          result.expectCompressed_ = expectCompressedBuilder_.build();
-        }
-        result.fillServerId_ = fillServerId_;
-        result.fillGrpclbRouteType_ = fillGrpclbRouteType_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.SimpleRequest) {
-          return mergeFrom((grpc.testing.Messages.SimpleRequest)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.SimpleRequest other) {
-        if (other == grpc.testing.Messages.SimpleRequest.getDefaultInstance()) return this;
-        if (other.responseType_ != 0) {
-          setResponseTypeValue(other.getResponseTypeValue());
-        }
-        if (other.getResponseSize() != 0) {
-          setResponseSize(other.getResponseSize());
-        }
-        if (other.hasPayload()) {
-          mergePayload(other.getPayload());
-        }
-        if (other.getFillUsername() != false) {
-          setFillUsername(other.getFillUsername());
-        }
-        if (other.getFillOauthScope() != false) {
-          setFillOauthScope(other.getFillOauthScope());
-        }
-        if (other.hasResponseCompressed()) {
-          mergeResponseCompressed(other.getResponseCompressed());
-        }
-        if (other.hasResponseStatus()) {
-          mergeResponseStatus(other.getResponseStatus());
-        }
-        if (other.hasExpectCompressed()) {
-          mergeExpectCompressed(other.getExpectCompressed());
-        }
-        if (other.getFillServerId() != false) {
-          setFillServerId(other.getFillServerId());
-        }
-        if (other.getFillGrpclbRouteType() != false) {
-          setFillGrpclbRouteType(other.getFillGrpclbRouteType());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.SimpleRequest parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.SimpleRequest) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private int responseType_ = 0;
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, server randomly chooses one from other formats.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public int getResponseTypeValue() {
-        return responseType_;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, server randomly chooses one from other formats.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder setResponseTypeValue(int value) {
-        responseType_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, server randomly chooses one from other formats.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public grpc.testing.Messages.PayloadType getResponseType() {
-        grpc.testing.Messages.PayloadType result = grpc.testing.Messages.PayloadType.valueOf(responseType_);
-        return result == null ? grpc.testing.Messages.PayloadType.UNRECOGNIZED : result;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, server randomly chooses one from other formats.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder setResponseType(grpc.testing.Messages.PayloadType value) {
-        if (value == null) {
-          throw new NullPointerException();
-        }
-        
-        responseType_ = value.getNumber();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, server randomly chooses one from other formats.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder clearResponseType() {
-        
-        responseType_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private int responseSize_ ;
-      /**
-       * <pre>
-       * Desired payload size in the response from the server.
-       * </pre>
-       *
-       * <code>int32 response_size = 2;</code>
-       */
-      public int getResponseSize() {
-        return responseSize_;
-      }
-      /**
-       * <pre>
-       * Desired payload size in the response from the server.
-       * </pre>
-       *
-       * <code>int32 response_size = 2;</code>
-       */
-      public Builder setResponseSize(int value) {
-        
-        responseSize_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload size in the response from the server.
-       * </pre>
-       *
-       * <code>int32 response_size = 2;</code>
-       */
-      public Builder clearResponseSize() {
-        
-        responseSize_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private grpc.testing.Messages.Payload payload_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder> payloadBuilder_;
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public boolean hasPayload() {
-        return payloadBuilder_ != null || payload_ != null;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public grpc.testing.Messages.Payload getPayload() {
-        if (payloadBuilder_ == null) {
-          return payload_ == null ? grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-        } else {
-          return payloadBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder setPayload(grpc.testing.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          payload_ = value;
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder setPayload(
-          grpc.testing.Messages.Payload.Builder builderForValue) {
-        if (payloadBuilder_ == null) {
-          payload_ = builderForValue.build();
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder mergePayload(grpc.testing.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (payload_ != null) {
-            payload_ =
-              grpc.testing.Messages.Payload.newBuilder(payload_).mergeFrom(value).buildPartial();
-          } else {
-            payload_ = value;
-          }
-          onChanged();
-        } else {
-          payloadBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder clearPayload() {
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-          onChanged();
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public grpc.testing.Messages.Payload.Builder getPayloadBuilder() {
-        
-        onChanged();
-        return getPayloadFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-        if (payloadBuilder_ != null) {
-          return payloadBuilder_.getMessageOrBuilder();
-        } else {
-          return payload_ == null ?
-              grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-        }
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder> 
-          getPayloadFieldBuilder() {
-        if (payloadBuilder_ == null) {
-          payloadBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder>(
-                  getPayload(),
-                  getParentForChildren(),
-                  isClean());
-          payload_ = null;
-        }
-        return payloadBuilder_;
-      }
-
-      private boolean fillUsername_ ;
-      /**
-       * <pre>
-       * Whether SimpleResponse should include username.
-       * </pre>
-       *
-       * <code>bool fill_username = 4;</code>
-       */
-      public boolean getFillUsername() {
-        return fillUsername_;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include username.
-       * </pre>
-       *
-       * <code>bool fill_username = 4;</code>
-       */
-      public Builder setFillUsername(boolean value) {
-        
-        fillUsername_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include username.
-       * </pre>
-       *
-       * <code>bool fill_username = 4;</code>
-       */
-      public Builder clearFillUsername() {
-        
-        fillUsername_ = false;
-        onChanged();
-        return this;
-      }
-
-      private boolean fillOauthScope_ ;
-      /**
-       * <pre>
-       * Whether SimpleResponse should include OAuth scope.
-       * </pre>
-       *
-       * <code>bool fill_oauth_scope = 5;</code>
-       */
-      public boolean getFillOauthScope() {
-        return fillOauthScope_;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include OAuth scope.
-       * </pre>
-       *
-       * <code>bool fill_oauth_scope = 5;</code>
-       */
-      public Builder setFillOauthScope(boolean value) {
-        
-        fillOauthScope_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include OAuth scope.
-       * </pre>
-       *
-       * <code>bool fill_oauth_scope = 5;</code>
-       */
-      public Builder clearFillOauthScope() {
-        
-        fillOauthScope_ = false;
-        onChanged();
-        return this;
-      }
-
-      private grpc.testing.Messages.BoolValue responseCompressed_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder> responseCompressedBuilder_;
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-       */
-      public boolean hasResponseCompressed() {
-        return responseCompressedBuilder_ != null || responseCompressed_ != null;
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-       */
-      public grpc.testing.Messages.BoolValue getResponseCompressed() {
-        if (responseCompressedBuilder_ == null) {
-          return responseCompressed_ == null ? grpc.testing.Messages.BoolValue.getDefaultInstance() : responseCompressed_;
-        } else {
-          return responseCompressedBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-       */
-      public Builder setResponseCompressed(grpc.testing.Messages.BoolValue value) {
-        if (responseCompressedBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          responseCompressed_ = value;
-          onChanged();
-        } else {
-          responseCompressedBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-       */
-      public Builder setResponseCompressed(
-          grpc.testing.Messages.BoolValue.Builder builderForValue) {
-        if (responseCompressedBuilder_ == null) {
-          responseCompressed_ = builderForValue.build();
-          onChanged();
-        } else {
-          responseCompressedBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-       */
-      public Builder mergeResponseCompressed(grpc.testing.Messages.BoolValue value) {
-        if (responseCompressedBuilder_ == null) {
-          if (responseCompressed_ != null) {
-            responseCompressed_ =
-              grpc.testing.Messages.BoolValue.newBuilder(responseCompressed_).mergeFrom(value).buildPartial();
-          } else {
-            responseCompressed_ = value;
-          }
-          onChanged();
-        } else {
-          responseCompressedBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-       */
-      public Builder clearResponseCompressed() {
-        if (responseCompressedBuilder_ == null) {
-          responseCompressed_ = null;
-          onChanged();
-        } else {
-          responseCompressed_ = null;
-          responseCompressedBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-       */
-      public grpc.testing.Messages.BoolValue.Builder getResponseCompressedBuilder() {
-        
-        onChanged();
-        return getResponseCompressedFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-       */
-      public grpc.testing.Messages.BoolValueOrBuilder getResponseCompressedOrBuilder() {
-        if (responseCompressedBuilder_ != null) {
-          return responseCompressedBuilder_.getMessageOrBuilder();
-        } else {
-          return responseCompressed_ == null ?
-              grpc.testing.Messages.BoolValue.getDefaultInstance() : responseCompressed_;
-        }
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue response_compressed = 6;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder> 
-          getResponseCompressedFieldBuilder() {
-        if (responseCompressedBuilder_ == null) {
-          responseCompressedBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder>(
-                  getResponseCompressed(),
-                  getParentForChildren(),
-                  isClean());
-          responseCompressed_ = null;
-        }
-        return responseCompressedBuilder_;
-      }
-
-      private grpc.testing.Messages.EchoStatus responseStatus_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.EchoStatus, grpc.testing.Messages.EchoStatus.Builder, grpc.testing.Messages.EchoStatusOrBuilder> responseStatusBuilder_;
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public boolean hasResponseStatus() {
-        return responseStatusBuilder_ != null || responseStatus_ != null;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public grpc.testing.Messages.EchoStatus getResponseStatus() {
-        if (responseStatusBuilder_ == null) {
-          return responseStatus_ == null ? grpc.testing.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-        } else {
-          return responseStatusBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder setResponseStatus(grpc.testing.Messages.EchoStatus value) {
-        if (responseStatusBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          responseStatus_ = value;
-          onChanged();
-        } else {
-          responseStatusBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder setResponseStatus(
-          grpc.testing.Messages.EchoStatus.Builder builderForValue) {
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = builderForValue.build();
-          onChanged();
-        } else {
-          responseStatusBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder mergeResponseStatus(grpc.testing.Messages.EchoStatus value) {
-        if (responseStatusBuilder_ == null) {
-          if (responseStatus_ != null) {
-            responseStatus_ =
-              grpc.testing.Messages.EchoStatus.newBuilder(responseStatus_).mergeFrom(value).buildPartial();
-          } else {
-            responseStatus_ = value;
-          }
-          onChanged();
-        } else {
-          responseStatusBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder clearResponseStatus() {
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = null;
-          onChanged();
-        } else {
-          responseStatus_ = null;
-          responseStatusBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public grpc.testing.Messages.EchoStatus.Builder getResponseStatusBuilder() {
-        
-        onChanged();
-        return getResponseStatusFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public grpc.testing.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder() {
-        if (responseStatusBuilder_ != null) {
-          return responseStatusBuilder_.getMessageOrBuilder();
-        } else {
-          return responseStatus_ == null ?
-              grpc.testing.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-        }
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.EchoStatus, grpc.testing.Messages.EchoStatus.Builder, grpc.testing.Messages.EchoStatusOrBuilder> 
-          getResponseStatusFieldBuilder() {
-        if (responseStatusBuilder_ == null) {
-          responseStatusBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.EchoStatus, grpc.testing.Messages.EchoStatus.Builder, grpc.testing.Messages.EchoStatusOrBuilder>(
-                  getResponseStatus(),
-                  getParentForChildren(),
-                  isClean());
-          responseStatus_ = null;
-        }
-        return responseStatusBuilder_;
-      }
-
-      private grpc.testing.Messages.BoolValue expectCompressed_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder> expectCompressedBuilder_;
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-       */
-      public boolean hasExpectCompressed() {
-        return expectCompressedBuilder_ != null || expectCompressed_ != null;
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-       */
-      public grpc.testing.Messages.BoolValue getExpectCompressed() {
-        if (expectCompressedBuilder_ == null) {
-          return expectCompressed_ == null ? grpc.testing.Messages.BoolValue.getDefaultInstance() : expectCompressed_;
-        } else {
-          return expectCompressedBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-       */
-      public Builder setExpectCompressed(grpc.testing.Messages.BoolValue value) {
-        if (expectCompressedBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          expectCompressed_ = value;
-          onChanged();
-        } else {
-          expectCompressedBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-       */
-      public Builder setExpectCompressed(
-          grpc.testing.Messages.BoolValue.Builder builderForValue) {
-        if (expectCompressedBuilder_ == null) {
-          expectCompressed_ = builderForValue.build();
-          onChanged();
-        } else {
-          expectCompressedBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-       */
-      public Builder mergeExpectCompressed(grpc.testing.Messages.BoolValue value) {
-        if (expectCompressedBuilder_ == null) {
-          if (expectCompressed_ != null) {
-            expectCompressed_ =
-              grpc.testing.Messages.BoolValue.newBuilder(expectCompressed_).mergeFrom(value).buildPartial();
-          } else {
-            expectCompressed_ = value;
-          }
-          onChanged();
-        } else {
-          expectCompressedBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-       */
-      public Builder clearExpectCompressed() {
-        if (expectCompressedBuilder_ == null) {
-          expectCompressed_ = null;
-          onChanged();
-        } else {
-          expectCompressed_ = null;
-          expectCompressedBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-       */
-      public grpc.testing.Messages.BoolValue.Builder getExpectCompressedBuilder() {
-        
-        onChanged();
-        return getExpectCompressedFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-       */
-      public grpc.testing.Messages.BoolValueOrBuilder getExpectCompressedOrBuilder() {
-        if (expectCompressedBuilder_ != null) {
-          return expectCompressedBuilder_.getMessageOrBuilder();
-        } else {
-          return expectCompressed_ == null ?
-              grpc.testing.Messages.BoolValue.getDefaultInstance() : expectCompressed_;
-        }
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 8;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder> 
-          getExpectCompressedFieldBuilder() {
-        if (expectCompressedBuilder_ == null) {
-          expectCompressedBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder>(
-                  getExpectCompressed(),
-                  getParentForChildren(),
-                  isClean());
-          expectCompressed_ = null;
-        }
-        return expectCompressedBuilder_;
-      }
-
-      private boolean fillServerId_ ;
-      /**
-       * <pre>
-       * Whether SimpleResponse should include server_id.
-       * </pre>
-       *
-       * <code>bool fill_server_id = 9;</code>
-       */
-      public boolean getFillServerId() {
-        return fillServerId_;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include server_id.
-       * </pre>
-       *
-       * <code>bool fill_server_id = 9;</code>
-       */
-      public Builder setFillServerId(boolean value) {
-        
-        fillServerId_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include server_id.
-       * </pre>
-       *
-       * <code>bool fill_server_id = 9;</code>
-       */
-      public Builder clearFillServerId() {
-        
-        fillServerId_ = false;
-        onChanged();
-        return this;
-      }
-
-      private boolean fillGrpclbRouteType_ ;
-      /**
-       * <pre>
-       * Whether SimpleResponse should include grpclb_route_type.
-       * </pre>
-       *
-       * <code>bool fill_grpclb_route_type = 10;</code>
-       */
-      public boolean getFillGrpclbRouteType() {
-        return fillGrpclbRouteType_;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include grpclb_route_type.
-       * </pre>
-       *
-       * <code>bool fill_grpclb_route_type = 10;</code>
-       */
-      public Builder setFillGrpclbRouteType(boolean value) {
-        
-        fillGrpclbRouteType_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether SimpleResponse should include grpclb_route_type.
-       * </pre>
-       *
-       * <code>bool fill_grpclb_route_type = 10;</code>
-       */
-      public Builder clearFillGrpclbRouteType() {
-        
-        fillGrpclbRouteType_ = false;
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.SimpleRequest)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.SimpleRequest)
-    private static final grpc.testing.Messages.SimpleRequest DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.SimpleRequest();
-    }
-
-    public static grpc.testing.Messages.SimpleRequest getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<SimpleRequest>
-        PARSER = new com.google.protobuf.AbstractParser<SimpleRequest>() {
-      public SimpleRequest parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new SimpleRequest(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<SimpleRequest> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<SimpleRequest> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.SimpleRequest getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface SimpleResponseOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.SimpleResponse)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Payload to increase message size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    boolean hasPayload();
-    /**
-     * <pre>
-     * Payload to increase message size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    grpc.testing.Messages.Payload getPayload();
-    /**
-     * <pre>
-     * Payload to increase message size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder();
-
-    /**
-     * <pre>
-     * The user the request came from, for verifying authentication was
-     * successful when the client expected it.
-     * </pre>
-     *
-     * <code>string username = 2;</code>
-     */
-    java.lang.String getUsername();
-    /**
-     * <pre>
-     * The user the request came from, for verifying authentication was
-     * successful when the client expected it.
-     * </pre>
-     *
-     * <code>string username = 2;</code>
-     */
-    com.google.protobuf.ByteString
-        getUsernameBytes();
-
-    /**
-     * <pre>
-     * OAuth scope.
-     * </pre>
-     *
-     * <code>string oauth_scope = 3;</code>
-     */
-    java.lang.String getOauthScope();
-    /**
-     * <pre>
-     * OAuth scope.
-     * </pre>
-     *
-     * <code>string oauth_scope = 3;</code>
-     */
-    com.google.protobuf.ByteString
-        getOauthScopeBytes();
-
-    /**
-     * <pre>
-     * Server ID. This must be unique among different server instances,
-     * but the same across all RPC's made to a particular server instance.
-     * </pre>
-     *
-     * <code>string server_id = 4;</code>
-     */
-    java.lang.String getServerId();
-    /**
-     * <pre>
-     * Server ID. This must be unique among different server instances,
-     * but the same across all RPC's made to a particular server instance.
-     * </pre>
-     *
-     * <code>string server_id = 4;</code>
-     */
-    com.google.protobuf.ByteString
-        getServerIdBytes();
-
-    /**
-     * <pre>
-     * gRPCLB Path.
-     * </pre>
-     *
-     * <code>.grpc.testing.GrpclbRouteType grpclb_route_type = 5;</code>
-     */
-    int getGrpclbRouteTypeValue();
-    /**
-     * <pre>
-     * gRPCLB Path.
-     * </pre>
-     *
-     * <code>.grpc.testing.GrpclbRouteType grpclb_route_type = 5;</code>
-     */
-    grpc.testing.Messages.GrpclbRouteType getGrpclbRouteType();
-
-    /**
-     * <pre>
-     * Server hostname.
-     * </pre>
-     *
-     * <code>string hostname = 6;</code>
-     */
-    java.lang.String getHostname();
-    /**
-     * <pre>
-     * Server hostname.
-     * </pre>
-     *
-     * <code>string hostname = 6;</code>
-     */
-    com.google.protobuf.ByteString
-        getHostnameBytes();
-  }
-  /**
-   * <pre>
-   * Unary response, as configured by the request.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.SimpleResponse}
-   */
-  public  static final class SimpleResponse extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.SimpleResponse)
-      SimpleResponseOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use SimpleResponse.newBuilder() to construct.
-    private SimpleResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private SimpleResponse() {
-      username_ = "";
-      oauthScope_ = "";
-      serverId_ = "";
-      grpclbRouteType_ = 0;
-      hostname_ = "";
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private SimpleResponse(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 10: {
-              grpc.testing.Messages.Payload.Builder subBuilder = null;
-              if (payload_ != null) {
-                subBuilder = payload_.toBuilder();
-              }
-              payload_ = input.readMessage(grpc.testing.Messages.Payload.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(payload_);
-                payload_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-            case 18: {
-              java.lang.String s = input.readStringRequireUtf8();
-
-              username_ = s;
-              break;
-            }
-            case 26: {
-              java.lang.String s = input.readStringRequireUtf8();
-
-              oauthScope_ = s;
-              break;
-            }
-            case 34: {
-              java.lang.String s = input.readStringRequireUtf8();
-
-              serverId_ = s;
-              break;
-            }
-            case 40: {
-              int rawValue = input.readEnum();
-
-              grpclbRouteType_ = rawValue;
-              break;
-            }
-            case 50: {
-              java.lang.String s = input.readStringRequireUtf8();
-
-              hostname_ = s;
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_SimpleResponse_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_SimpleResponse_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.SimpleResponse.class, grpc.testing.Messages.SimpleResponse.Builder.class);
-    }
-
-    public static final int PAYLOAD_FIELD_NUMBER = 1;
-    private grpc.testing.Messages.Payload payload_;
-    /**
-     * <pre>
-     * Payload to increase message size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public boolean hasPayload() {
-      return payload_ != null;
-    }
-    /**
-     * <pre>
-     * Payload to increase message size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public grpc.testing.Messages.Payload getPayload() {
-      return payload_ == null ? grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-    }
-    /**
-     * <pre>
-     * Payload to increase message size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-      return getPayload();
-    }
-
-    public static final int USERNAME_FIELD_NUMBER = 2;
-    private volatile java.lang.Object username_;
-    /**
-     * <pre>
-     * The user the request came from, for verifying authentication was
-     * successful when the client expected it.
-     * </pre>
-     *
-     * <code>string username = 2;</code>
-     */
-    public java.lang.String getUsername() {
-      java.lang.Object ref = username_;
-      if (ref instanceof java.lang.String) {
-        return (java.lang.String) ref;
-      } else {
-        com.google.protobuf.ByteString bs = 
-            (com.google.protobuf.ByteString) ref;
-        java.lang.String s = bs.toStringUtf8();
-        username_ = s;
-        return s;
-      }
-    }
-    /**
-     * <pre>
-     * The user the request came from, for verifying authentication was
-     * successful when the client expected it.
-     * </pre>
-     *
-     * <code>string username = 2;</code>
-     */
-    public com.google.protobuf.ByteString
-        getUsernameBytes() {
-      java.lang.Object ref = username_;
-      if (ref instanceof java.lang.String) {
-        com.google.protobuf.ByteString b = 
-            com.google.protobuf.ByteString.copyFromUtf8(
-                (java.lang.String) ref);
-        username_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
-      }
-    }
-
-    public static final int OAUTH_SCOPE_FIELD_NUMBER = 3;
-    private volatile java.lang.Object oauthScope_;
-    /**
-     * <pre>
-     * OAuth scope.
-     * </pre>
-     *
-     * <code>string oauth_scope = 3;</code>
-     */
-    public java.lang.String getOauthScope() {
-      java.lang.Object ref = oauthScope_;
-      if (ref instanceof java.lang.String) {
-        return (java.lang.String) ref;
-      } else {
-        com.google.protobuf.ByteString bs = 
-            (com.google.protobuf.ByteString) ref;
-        java.lang.String s = bs.toStringUtf8();
-        oauthScope_ = s;
-        return s;
-      }
-    }
-    /**
-     * <pre>
-     * OAuth scope.
-     * </pre>
-     *
-     * <code>string oauth_scope = 3;</code>
-     */
-    public com.google.protobuf.ByteString
-        getOauthScopeBytes() {
-      java.lang.Object ref = oauthScope_;
-      if (ref instanceof java.lang.String) {
-        com.google.protobuf.ByteString b = 
-            com.google.protobuf.ByteString.copyFromUtf8(
-                (java.lang.String) ref);
-        oauthScope_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
-      }
-    }
-
-    public static final int SERVER_ID_FIELD_NUMBER = 4;
-    private volatile java.lang.Object serverId_;
-    /**
-     * <pre>
-     * Server ID. This must be unique among different server instances,
-     * but the same across all RPC's made to a particular server instance.
-     * </pre>
-     *
-     * <code>string server_id = 4;</code>
-     */
-    public java.lang.String getServerId() {
-      java.lang.Object ref = serverId_;
-      if (ref instanceof java.lang.String) {
-        return (java.lang.String) ref;
-      } else {
-        com.google.protobuf.ByteString bs = 
-            (com.google.protobuf.ByteString) ref;
-        java.lang.String s = bs.toStringUtf8();
-        serverId_ = s;
-        return s;
-      }
-    }
-    /**
-     * <pre>
-     * Server ID. This must be unique among different server instances,
-     * but the same across all RPC's made to a particular server instance.
-     * </pre>
-     *
-     * <code>string server_id = 4;</code>
-     */
-    public com.google.protobuf.ByteString
-        getServerIdBytes() {
-      java.lang.Object ref = serverId_;
-      if (ref instanceof java.lang.String) {
-        com.google.protobuf.ByteString b = 
-            com.google.protobuf.ByteString.copyFromUtf8(
-                (java.lang.String) ref);
-        serverId_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
-      }
-    }
-
-    public static final int GRPCLB_ROUTE_TYPE_FIELD_NUMBER = 5;
-    private int grpclbRouteType_;
-    /**
-     * <pre>
-     * gRPCLB Path.
-     * </pre>
-     *
-     * <code>.grpc.testing.GrpclbRouteType grpclb_route_type = 5;</code>
-     */
-    public int getGrpclbRouteTypeValue() {
-      return grpclbRouteType_;
-    }
-    /**
-     * <pre>
-     * gRPCLB Path.
-     * </pre>
-     *
-     * <code>.grpc.testing.GrpclbRouteType grpclb_route_type = 5;</code>
-     */
-    public grpc.testing.Messages.GrpclbRouteType getGrpclbRouteType() {
-      grpc.testing.Messages.GrpclbRouteType result = grpc.testing.Messages.GrpclbRouteType.valueOf(grpclbRouteType_);
-      return result == null ? grpc.testing.Messages.GrpclbRouteType.UNRECOGNIZED : result;
-    }
-
-    public static final int HOSTNAME_FIELD_NUMBER = 6;
-    private volatile java.lang.Object hostname_;
-    /**
-     * <pre>
-     * Server hostname.
-     * </pre>
-     *
-     * <code>string hostname = 6;</code>
-     */
-    public java.lang.String getHostname() {
-      java.lang.Object ref = hostname_;
-      if (ref instanceof java.lang.String) {
-        return (java.lang.String) ref;
-      } else {
-        com.google.protobuf.ByteString bs = 
-            (com.google.protobuf.ByteString) ref;
-        java.lang.String s = bs.toStringUtf8();
-        hostname_ = s;
-        return s;
-      }
-    }
-    /**
-     * <pre>
-     * Server hostname.
-     * </pre>
-     *
-     * <code>string hostname = 6;</code>
-     */
-    public com.google.protobuf.ByteString
-        getHostnameBytes() {
-      java.lang.Object ref = hostname_;
-      if (ref instanceof java.lang.String) {
-        com.google.protobuf.ByteString b = 
-            com.google.protobuf.ByteString.copyFromUtf8(
-                (java.lang.String) ref);
-        hostname_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
-      }
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (payload_ != null) {
-        output.writeMessage(1, getPayload());
-      }
-      if (!getUsernameBytes().isEmpty()) {
-        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, username_);
-      }
-      if (!getOauthScopeBytes().isEmpty()) {
-        com.google.protobuf.GeneratedMessageV3.writeString(output, 3, oauthScope_);
-      }
-      if (!getServerIdBytes().isEmpty()) {
-        com.google.protobuf.GeneratedMessageV3.writeString(output, 4, serverId_);
-      }
-      if (grpclbRouteType_ != grpc.testing.Messages.GrpclbRouteType.GRPCLB_ROUTE_TYPE_UNKNOWN.getNumber()) {
-        output.writeEnum(5, grpclbRouteType_);
-      }
-      if (!getHostnameBytes().isEmpty()) {
-        com.google.protobuf.GeneratedMessageV3.writeString(output, 6, hostname_);
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (payload_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(1, getPayload());
-      }
-      if (!getUsernameBytes().isEmpty()) {
-        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, username_);
-      }
-      if (!getOauthScopeBytes().isEmpty()) {
-        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, oauthScope_);
-      }
-      if (!getServerIdBytes().isEmpty()) {
-        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, serverId_);
-      }
-      if (grpclbRouteType_ != grpc.testing.Messages.GrpclbRouteType.GRPCLB_ROUTE_TYPE_UNKNOWN.getNumber()) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(5, grpclbRouteType_);
-      }
-      if (!getHostnameBytes().isEmpty()) {
-        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, hostname_);
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.SimpleResponse)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.SimpleResponse other = (grpc.testing.Messages.SimpleResponse) obj;
-
-      boolean result = true;
-      result = result && (hasPayload() == other.hasPayload());
-      if (hasPayload()) {
-        result = result && getPayload()
-            .equals(other.getPayload());
-      }
-      result = result && getUsername()
-          .equals(other.getUsername());
-      result = result && getOauthScope()
-          .equals(other.getOauthScope());
-      result = result && getServerId()
-          .equals(other.getServerId());
-      result = result && grpclbRouteType_ == other.grpclbRouteType_;
-      result = result && getHostname()
-          .equals(other.getHostname());
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      if (hasPayload()) {
-        hash = (37 * hash) + PAYLOAD_FIELD_NUMBER;
-        hash = (53 * hash) + getPayload().hashCode();
-      }
-      hash = (37 * hash) + USERNAME_FIELD_NUMBER;
-      hash = (53 * hash) + getUsername().hashCode();
-      hash = (37 * hash) + OAUTH_SCOPE_FIELD_NUMBER;
-      hash = (53 * hash) + getOauthScope().hashCode();
-      hash = (37 * hash) + SERVER_ID_FIELD_NUMBER;
-      hash = (53 * hash) + getServerId().hashCode();
-      hash = (37 * hash) + GRPCLB_ROUTE_TYPE_FIELD_NUMBER;
-      hash = (53 * hash) + grpclbRouteType_;
-      hash = (37 * hash) + HOSTNAME_FIELD_NUMBER;
-      hash = (53 * hash) + getHostname().hashCode();
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.SimpleResponse parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.SimpleResponse parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.SimpleResponse prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * Unary response, as configured by the request.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.SimpleResponse}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.SimpleResponse)
-        grpc.testing.Messages.SimpleResponseOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_SimpleResponse_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_SimpleResponse_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.SimpleResponse.class, grpc.testing.Messages.SimpleResponse.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.SimpleResponse.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-        username_ = "";
-
-        oauthScope_ = "";
-
-        serverId_ = "";
-
-        grpclbRouteType_ = 0;
-
-        hostname_ = "";
-
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_SimpleResponse_descriptor;
-      }
-
-      public grpc.testing.Messages.SimpleResponse getDefaultInstanceForType() {
-        return grpc.testing.Messages.SimpleResponse.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.SimpleResponse build() {
-        grpc.testing.Messages.SimpleResponse result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.SimpleResponse buildPartial() {
-        grpc.testing.Messages.SimpleResponse result = new grpc.testing.Messages.SimpleResponse(this);
-        if (payloadBuilder_ == null) {
-          result.payload_ = payload_;
-        } else {
-          result.payload_ = payloadBuilder_.build();
-        }
-        result.username_ = username_;
-        result.oauthScope_ = oauthScope_;
-        result.serverId_ = serverId_;
-        result.grpclbRouteType_ = grpclbRouteType_;
-        result.hostname_ = hostname_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.SimpleResponse) {
-          return mergeFrom((grpc.testing.Messages.SimpleResponse)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.SimpleResponse other) {
-        if (other == grpc.testing.Messages.SimpleResponse.getDefaultInstance()) return this;
-        if (other.hasPayload()) {
-          mergePayload(other.getPayload());
-        }
-        if (!other.getUsername().isEmpty()) {
-          username_ = other.username_;
-          onChanged();
-        }
-        if (!other.getOauthScope().isEmpty()) {
-          oauthScope_ = other.oauthScope_;
-          onChanged();
-        }
-        if (!other.getServerId().isEmpty()) {
-          serverId_ = other.serverId_;
-          onChanged();
-        }
-        if (other.grpclbRouteType_ != 0) {
-          setGrpclbRouteTypeValue(other.getGrpclbRouteTypeValue());
-        }
-        if (!other.getHostname().isEmpty()) {
-          hostname_ = other.hostname_;
-          onChanged();
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.SimpleResponse parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.SimpleResponse) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private grpc.testing.Messages.Payload payload_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder> payloadBuilder_;
-      /**
-       * <pre>
-       * Payload to increase message size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public boolean hasPayload() {
-        return payloadBuilder_ != null || payload_ != null;
-      }
-      /**
-       * <pre>
-       * Payload to increase message size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public grpc.testing.Messages.Payload getPayload() {
-        if (payloadBuilder_ == null) {
-          return payload_ == null ? grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-        } else {
-          return payloadBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Payload to increase message size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder setPayload(grpc.testing.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          payload_ = value;
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Payload to increase message size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder setPayload(
-          grpc.testing.Messages.Payload.Builder builderForValue) {
-        if (payloadBuilder_ == null) {
-          payload_ = builderForValue.build();
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Payload to increase message size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder mergePayload(grpc.testing.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (payload_ != null) {
-            payload_ =
-              grpc.testing.Messages.Payload.newBuilder(payload_).mergeFrom(value).buildPartial();
-          } else {
-            payload_ = value;
-          }
-          onChanged();
-        } else {
-          payloadBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Payload to increase message size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder clearPayload() {
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-          onChanged();
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Payload to increase message size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public grpc.testing.Messages.Payload.Builder getPayloadBuilder() {
-        
-        onChanged();
-        return getPayloadFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Payload to increase message size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-        if (payloadBuilder_ != null) {
-          return payloadBuilder_.getMessageOrBuilder();
-        } else {
-          return payload_ == null ?
-              grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-        }
-      }
-      /**
-       * <pre>
-       * Payload to increase message size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder> 
-          getPayloadFieldBuilder() {
-        if (payloadBuilder_ == null) {
-          payloadBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder>(
-                  getPayload(),
-                  getParentForChildren(),
-                  isClean());
-          payload_ = null;
-        }
-        return payloadBuilder_;
-      }
-
-      private java.lang.Object username_ = "";
-      /**
-       * <pre>
-       * The user the request came from, for verifying authentication was
-       * successful when the client expected it.
-       * </pre>
-       *
-       * <code>string username = 2;</code>
-       */
-      public java.lang.String getUsername() {
-        java.lang.Object ref = username_;
-        if (!(ref instanceof java.lang.String)) {
-          com.google.protobuf.ByteString bs =
-              (com.google.protobuf.ByteString) ref;
-          java.lang.String s = bs.toStringUtf8();
-          username_ = s;
-          return s;
-        } else {
-          return (java.lang.String) ref;
-        }
-      }
-      /**
-       * <pre>
-       * The user the request came from, for verifying authentication was
-       * successful when the client expected it.
-       * </pre>
-       *
-       * <code>string username = 2;</code>
-       */
-      public com.google.protobuf.ByteString
-          getUsernameBytes() {
-        java.lang.Object ref = username_;
-        if (ref instanceof String) {
-          com.google.protobuf.ByteString b = 
-              com.google.protobuf.ByteString.copyFromUtf8(
-                  (java.lang.String) ref);
-          username_ = b;
-          return b;
-        } else {
-          return (com.google.protobuf.ByteString) ref;
-        }
-      }
-      /**
-       * <pre>
-       * The user the request came from, for verifying authentication was
-       * successful when the client expected it.
-       * </pre>
-       *
-       * <code>string username = 2;</code>
-       */
-      public Builder setUsername(
-          java.lang.String value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  
-        username_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * The user the request came from, for verifying authentication was
-       * successful when the client expected it.
-       * </pre>
-       *
-       * <code>string username = 2;</code>
-       */
-      public Builder clearUsername() {
-        
-        username_ = getDefaultInstance().getUsername();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * The user the request came from, for verifying authentication was
-       * successful when the client expected it.
-       * </pre>
-       *
-       * <code>string username = 2;</code>
-       */
-      public Builder setUsernameBytes(
-          com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  checkByteStringIsUtf8(value);
-        
-        username_ = value;
-        onChanged();
-        return this;
-      }
-
-      private java.lang.Object oauthScope_ = "";
-      /**
-       * <pre>
-       * OAuth scope.
-       * </pre>
-       *
-       * <code>string oauth_scope = 3;</code>
-       */
-      public java.lang.String getOauthScope() {
-        java.lang.Object ref = oauthScope_;
-        if (!(ref instanceof java.lang.String)) {
-          com.google.protobuf.ByteString bs =
-              (com.google.protobuf.ByteString) ref;
-          java.lang.String s = bs.toStringUtf8();
-          oauthScope_ = s;
-          return s;
-        } else {
-          return (java.lang.String) ref;
-        }
-      }
-      /**
-       * <pre>
-       * OAuth scope.
-       * </pre>
-       *
-       * <code>string oauth_scope = 3;</code>
-       */
-      public com.google.protobuf.ByteString
-          getOauthScopeBytes() {
-        java.lang.Object ref = oauthScope_;
-        if (ref instanceof String) {
-          com.google.protobuf.ByteString b = 
-              com.google.protobuf.ByteString.copyFromUtf8(
-                  (java.lang.String) ref);
-          oauthScope_ = b;
-          return b;
-        } else {
-          return (com.google.protobuf.ByteString) ref;
-        }
-      }
-      /**
-       * <pre>
-       * OAuth scope.
-       * </pre>
-       *
-       * <code>string oauth_scope = 3;</code>
-       */
-      public Builder setOauthScope(
-          java.lang.String value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  
-        oauthScope_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * OAuth scope.
-       * </pre>
-       *
-       * <code>string oauth_scope = 3;</code>
-       */
-      public Builder clearOauthScope() {
-        
-        oauthScope_ = getDefaultInstance().getOauthScope();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * OAuth scope.
-       * </pre>
-       *
-       * <code>string oauth_scope = 3;</code>
-       */
-      public Builder setOauthScopeBytes(
-          com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  checkByteStringIsUtf8(value);
-        
-        oauthScope_ = value;
-        onChanged();
-        return this;
-      }
-
-      private java.lang.Object serverId_ = "";
-      /**
-       * <pre>
-       * Server ID. This must be unique among different server instances,
-       * but the same across all RPC's made to a particular server instance.
-       * </pre>
-       *
-       * <code>string server_id = 4;</code>
-       */
-      public java.lang.String getServerId() {
-        java.lang.Object ref = serverId_;
-        if (!(ref instanceof java.lang.String)) {
-          com.google.protobuf.ByteString bs =
-              (com.google.protobuf.ByteString) ref;
-          java.lang.String s = bs.toStringUtf8();
-          serverId_ = s;
-          return s;
-        } else {
-          return (java.lang.String) ref;
-        }
-      }
-      /**
-       * <pre>
-       * Server ID. This must be unique among different server instances,
-       * but the same across all RPC's made to a particular server instance.
-       * </pre>
-       *
-       * <code>string server_id = 4;</code>
-       */
-      public com.google.protobuf.ByteString
-          getServerIdBytes() {
-        java.lang.Object ref = serverId_;
-        if (ref instanceof String) {
-          com.google.protobuf.ByteString b = 
-              com.google.protobuf.ByteString.copyFromUtf8(
-                  (java.lang.String) ref);
-          serverId_ = b;
-          return b;
-        } else {
-          return (com.google.protobuf.ByteString) ref;
-        }
-      }
-      /**
-       * <pre>
-       * Server ID. This must be unique among different server instances,
-       * but the same across all RPC's made to a particular server instance.
-       * </pre>
-       *
-       * <code>string server_id = 4;</code>
-       */
-      public Builder setServerId(
-          java.lang.String value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  
-        serverId_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Server ID. This must be unique among different server instances,
-       * but the same across all RPC's made to a particular server instance.
-       * </pre>
-       *
-       * <code>string server_id = 4;</code>
-       */
-      public Builder clearServerId() {
-        
-        serverId_ = getDefaultInstance().getServerId();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Server ID. This must be unique among different server instances,
-       * but the same across all RPC's made to a particular server instance.
-       * </pre>
-       *
-       * <code>string server_id = 4;</code>
-       */
-      public Builder setServerIdBytes(
-          com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  checkByteStringIsUtf8(value);
-        
-        serverId_ = value;
-        onChanged();
-        return this;
-      }
-
-      private int grpclbRouteType_ = 0;
-      /**
-       * <pre>
-       * gRPCLB Path.
-       * </pre>
-       *
-       * <code>.grpc.testing.GrpclbRouteType grpclb_route_type = 5;</code>
-       */
-      public int getGrpclbRouteTypeValue() {
-        return grpclbRouteType_;
-      }
-      /**
-       * <pre>
-       * gRPCLB Path.
-       * </pre>
-       *
-       * <code>.grpc.testing.GrpclbRouteType grpclb_route_type = 5;</code>
-       */
-      public Builder setGrpclbRouteTypeValue(int value) {
-        grpclbRouteType_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * gRPCLB Path.
-       * </pre>
-       *
-       * <code>.grpc.testing.GrpclbRouteType grpclb_route_type = 5;</code>
-       */
-      public grpc.testing.Messages.GrpclbRouteType getGrpclbRouteType() {
-        grpc.testing.Messages.GrpclbRouteType result = grpc.testing.Messages.GrpclbRouteType.valueOf(grpclbRouteType_);
-        return result == null ? grpc.testing.Messages.GrpclbRouteType.UNRECOGNIZED : result;
-      }
-      /**
-       * <pre>
-       * gRPCLB Path.
-       * </pre>
-       *
-       * <code>.grpc.testing.GrpclbRouteType grpclb_route_type = 5;</code>
-       */
-      public Builder setGrpclbRouteType(grpc.testing.Messages.GrpclbRouteType value) {
-        if (value == null) {
-          throw new NullPointerException();
-        }
-        
-        grpclbRouteType_ = value.getNumber();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * gRPCLB Path.
-       * </pre>
-       *
-       * <code>.grpc.testing.GrpclbRouteType grpclb_route_type = 5;</code>
-       */
-      public Builder clearGrpclbRouteType() {
-        
-        grpclbRouteType_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private java.lang.Object hostname_ = "";
-      /**
-       * <pre>
-       * Server hostname.
-       * </pre>
-       *
-       * <code>string hostname = 6;</code>
-       */
-      public java.lang.String getHostname() {
-        java.lang.Object ref = hostname_;
-        if (!(ref instanceof java.lang.String)) {
-          com.google.protobuf.ByteString bs =
-              (com.google.protobuf.ByteString) ref;
-          java.lang.String s = bs.toStringUtf8();
-          hostname_ = s;
-          return s;
-        } else {
-          return (java.lang.String) ref;
-        }
-      }
-      /**
-       * <pre>
-       * Server hostname.
-       * </pre>
-       *
-       * <code>string hostname = 6;</code>
-       */
-      public com.google.protobuf.ByteString
-          getHostnameBytes() {
-        java.lang.Object ref = hostname_;
-        if (ref instanceof String) {
-          com.google.protobuf.ByteString b = 
-              com.google.protobuf.ByteString.copyFromUtf8(
-                  (java.lang.String) ref);
-          hostname_ = b;
-          return b;
-        } else {
-          return (com.google.protobuf.ByteString) ref;
-        }
-      }
-      /**
-       * <pre>
-       * Server hostname.
-       * </pre>
-       *
-       * <code>string hostname = 6;</code>
-       */
-      public Builder setHostname(
-          java.lang.String value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  
-        hostname_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Server hostname.
-       * </pre>
-       *
-       * <code>string hostname = 6;</code>
-       */
-      public Builder clearHostname() {
-        
-        hostname_ = getDefaultInstance().getHostname();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Server hostname.
-       * </pre>
-       *
-       * <code>string hostname = 6;</code>
-       */
-      public Builder setHostnameBytes(
-          com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  checkByteStringIsUtf8(value);
-        
-        hostname_ = value;
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.SimpleResponse)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.SimpleResponse)
-    private static final grpc.testing.Messages.SimpleResponse DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.SimpleResponse();
-    }
-
-    public static grpc.testing.Messages.SimpleResponse getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<SimpleResponse>
-        PARSER = new com.google.protobuf.AbstractParser<SimpleResponse>() {
-      public SimpleResponse parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new SimpleResponse(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<SimpleResponse> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<SimpleResponse> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.SimpleResponse getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface StreamingInputCallRequestOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.StreamingInputCallRequest)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    boolean hasPayload();
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    grpc.testing.Messages.Payload getPayload();
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder();
-
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed. This field
-     * is "nullable" in order to interoperate seamlessly with servers not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the request's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-     */
-    boolean hasExpectCompressed();
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed. This field
-     * is "nullable" in order to interoperate seamlessly with servers not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the request's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-     */
-    grpc.testing.Messages.BoolValue getExpectCompressed();
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed. This field
-     * is "nullable" in order to interoperate seamlessly with servers not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the request's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-     */
-    grpc.testing.Messages.BoolValueOrBuilder getExpectCompressedOrBuilder();
-  }
-  /**
-   * <pre>
-   * Client-streaming request.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.StreamingInputCallRequest}
-   */
-  public  static final class StreamingInputCallRequest extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.StreamingInputCallRequest)
-      StreamingInputCallRequestOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use StreamingInputCallRequest.newBuilder() to construct.
-    private StreamingInputCallRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private StreamingInputCallRequest() {
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private StreamingInputCallRequest(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 10: {
-              grpc.testing.Messages.Payload.Builder subBuilder = null;
-              if (payload_ != null) {
-                subBuilder = payload_.toBuilder();
-              }
-              payload_ = input.readMessage(grpc.testing.Messages.Payload.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(payload_);
-                payload_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-            case 18: {
-              grpc.testing.Messages.BoolValue.Builder subBuilder = null;
-              if (expectCompressed_ != null) {
-                subBuilder = expectCompressed_.toBuilder();
-              }
-              expectCompressed_ = input.readMessage(grpc.testing.Messages.BoolValue.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(expectCompressed_);
-                expectCompressed_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_StreamingInputCallRequest_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_StreamingInputCallRequest_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.StreamingInputCallRequest.class, grpc.testing.Messages.StreamingInputCallRequest.Builder.class);
-    }
-
-    public static final int PAYLOAD_FIELD_NUMBER = 1;
-    private grpc.testing.Messages.Payload payload_;
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public boolean hasPayload() {
-      return payload_ != null;
-    }
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public grpc.testing.Messages.Payload getPayload() {
-      return payload_ == null ? grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-    }
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-      return getPayload();
-    }
-
-    public static final int EXPECT_COMPRESSED_FIELD_NUMBER = 2;
-    private grpc.testing.Messages.BoolValue expectCompressed_;
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed. This field
-     * is "nullable" in order to interoperate seamlessly with servers not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the request's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-     */
-    public boolean hasExpectCompressed() {
-      return expectCompressed_ != null;
-    }
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed. This field
-     * is "nullable" in order to interoperate seamlessly with servers not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the request's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-     */
-    public grpc.testing.Messages.BoolValue getExpectCompressed() {
-      return expectCompressed_ == null ? grpc.testing.Messages.BoolValue.getDefaultInstance() : expectCompressed_;
-    }
-    /**
-     * <pre>
-     * Whether the server should expect this request to be compressed. This field
-     * is "nullable" in order to interoperate seamlessly with servers not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the request's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-     */
-    public grpc.testing.Messages.BoolValueOrBuilder getExpectCompressedOrBuilder() {
-      return getExpectCompressed();
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (payload_ != null) {
-        output.writeMessage(1, getPayload());
-      }
-      if (expectCompressed_ != null) {
-        output.writeMessage(2, getExpectCompressed());
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (payload_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(1, getPayload());
-      }
-      if (expectCompressed_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(2, getExpectCompressed());
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.StreamingInputCallRequest)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.StreamingInputCallRequest other = (grpc.testing.Messages.StreamingInputCallRequest) obj;
-
-      boolean result = true;
-      result = result && (hasPayload() == other.hasPayload());
-      if (hasPayload()) {
-        result = result && getPayload()
-            .equals(other.getPayload());
-      }
-      result = result && (hasExpectCompressed() == other.hasExpectCompressed());
-      if (hasExpectCompressed()) {
-        result = result && getExpectCompressed()
-            .equals(other.getExpectCompressed());
-      }
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      if (hasPayload()) {
-        hash = (37 * hash) + PAYLOAD_FIELD_NUMBER;
-        hash = (53 * hash) + getPayload().hashCode();
-      }
-      if (hasExpectCompressed()) {
-        hash = (37 * hash) + EXPECT_COMPRESSED_FIELD_NUMBER;
-        hash = (53 * hash) + getExpectCompressed().hashCode();
-      }
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.StreamingInputCallRequest parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingInputCallRequest parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.StreamingInputCallRequest prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * Client-streaming request.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.StreamingInputCallRequest}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.StreamingInputCallRequest)
-        grpc.testing.Messages.StreamingInputCallRequestOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingInputCallRequest_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingInputCallRequest_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.StreamingInputCallRequest.class, grpc.testing.Messages.StreamingInputCallRequest.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.StreamingInputCallRequest.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-        if (expectCompressedBuilder_ == null) {
-          expectCompressed_ = null;
-        } else {
-          expectCompressed_ = null;
-          expectCompressedBuilder_ = null;
-        }
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingInputCallRequest_descriptor;
-      }
-
-      public grpc.testing.Messages.StreamingInputCallRequest getDefaultInstanceForType() {
-        return grpc.testing.Messages.StreamingInputCallRequest.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.StreamingInputCallRequest build() {
-        grpc.testing.Messages.StreamingInputCallRequest result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.StreamingInputCallRequest buildPartial() {
-        grpc.testing.Messages.StreamingInputCallRequest result = new grpc.testing.Messages.StreamingInputCallRequest(this);
-        if (payloadBuilder_ == null) {
-          result.payload_ = payload_;
-        } else {
-          result.payload_ = payloadBuilder_.build();
-        }
-        if (expectCompressedBuilder_ == null) {
-          result.expectCompressed_ = expectCompressed_;
-        } else {
-          result.expectCompressed_ = expectCompressedBuilder_.build();
-        }
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.StreamingInputCallRequest) {
-          return mergeFrom((grpc.testing.Messages.StreamingInputCallRequest)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.StreamingInputCallRequest other) {
-        if (other == grpc.testing.Messages.StreamingInputCallRequest.getDefaultInstance()) return this;
-        if (other.hasPayload()) {
-          mergePayload(other.getPayload());
-        }
-        if (other.hasExpectCompressed()) {
-          mergeExpectCompressed(other.getExpectCompressed());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.StreamingInputCallRequest parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.StreamingInputCallRequest) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private grpc.testing.Messages.Payload payload_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder> payloadBuilder_;
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public boolean hasPayload() {
-        return payloadBuilder_ != null || payload_ != null;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public grpc.testing.Messages.Payload getPayload() {
-        if (payloadBuilder_ == null) {
-          return payload_ == null ? grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-        } else {
-          return payloadBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder setPayload(grpc.testing.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          payload_ = value;
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder setPayload(
-          grpc.testing.Messages.Payload.Builder builderForValue) {
-        if (payloadBuilder_ == null) {
-          payload_ = builderForValue.build();
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder mergePayload(grpc.testing.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (payload_ != null) {
-            payload_ =
-              grpc.testing.Messages.Payload.newBuilder(payload_).mergeFrom(value).buildPartial();
-          } else {
-            payload_ = value;
-          }
-          onChanged();
-        } else {
-          payloadBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder clearPayload() {
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-          onChanged();
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public grpc.testing.Messages.Payload.Builder getPayloadBuilder() {
-        
-        onChanged();
-        return getPayloadFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-        if (payloadBuilder_ != null) {
-          return payloadBuilder_.getMessageOrBuilder();
-        } else {
-          return payload_ == null ?
-              grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-        }
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder> 
-          getPayloadFieldBuilder() {
-        if (payloadBuilder_ == null) {
-          payloadBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder>(
-                  getPayload(),
-                  getParentForChildren(),
-                  isClean());
-          payload_ = null;
-        }
-        return payloadBuilder_;
-      }
-
-      private grpc.testing.Messages.BoolValue expectCompressed_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder> expectCompressedBuilder_;
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed. This field
-       * is "nullable" in order to interoperate seamlessly with servers not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the request's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-       */
-      public boolean hasExpectCompressed() {
-        return expectCompressedBuilder_ != null || expectCompressed_ != null;
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed. This field
-       * is "nullable" in order to interoperate seamlessly with servers not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the request's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-       */
-      public grpc.testing.Messages.BoolValue getExpectCompressed() {
-        if (expectCompressedBuilder_ == null) {
-          return expectCompressed_ == null ? grpc.testing.Messages.BoolValue.getDefaultInstance() : expectCompressed_;
-        } else {
-          return expectCompressedBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed. This field
-       * is "nullable" in order to interoperate seamlessly with servers not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the request's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-       */
-      public Builder setExpectCompressed(grpc.testing.Messages.BoolValue value) {
-        if (expectCompressedBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          expectCompressed_ = value;
-          onChanged();
-        } else {
-          expectCompressedBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed. This field
-       * is "nullable" in order to interoperate seamlessly with servers not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the request's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-       */
-      public Builder setExpectCompressed(
-          grpc.testing.Messages.BoolValue.Builder builderForValue) {
-        if (expectCompressedBuilder_ == null) {
-          expectCompressed_ = builderForValue.build();
-          onChanged();
-        } else {
-          expectCompressedBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed. This field
-       * is "nullable" in order to interoperate seamlessly with servers not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the request's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-       */
-      public Builder mergeExpectCompressed(grpc.testing.Messages.BoolValue value) {
-        if (expectCompressedBuilder_ == null) {
-          if (expectCompressed_ != null) {
-            expectCompressed_ =
-              grpc.testing.Messages.BoolValue.newBuilder(expectCompressed_).mergeFrom(value).buildPartial();
-          } else {
-            expectCompressed_ = value;
-          }
-          onChanged();
-        } else {
-          expectCompressedBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed. This field
-       * is "nullable" in order to interoperate seamlessly with servers not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the request's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-       */
-      public Builder clearExpectCompressed() {
-        if (expectCompressedBuilder_ == null) {
-          expectCompressed_ = null;
-          onChanged();
-        } else {
-          expectCompressed_ = null;
-          expectCompressedBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed. This field
-       * is "nullable" in order to interoperate seamlessly with servers not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the request's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-       */
-      public grpc.testing.Messages.BoolValue.Builder getExpectCompressedBuilder() {
-        
-        onChanged();
-        return getExpectCompressedFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed. This field
-       * is "nullable" in order to interoperate seamlessly with servers not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the request's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-       */
-      public grpc.testing.Messages.BoolValueOrBuilder getExpectCompressedOrBuilder() {
-        if (expectCompressedBuilder_ != null) {
-          return expectCompressedBuilder_.getMessageOrBuilder();
-        } else {
-          return expectCompressed_ == null ?
-              grpc.testing.Messages.BoolValue.getDefaultInstance() : expectCompressed_;
-        }
-      }
-      /**
-       * <pre>
-       * Whether the server should expect this request to be compressed. This field
-       * is "nullable" in order to interoperate seamlessly with servers not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the request's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue expect_compressed = 2;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder> 
-          getExpectCompressedFieldBuilder() {
-        if (expectCompressedBuilder_ == null) {
-          expectCompressedBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder>(
-                  getExpectCompressed(),
-                  getParentForChildren(),
-                  isClean());
-          expectCompressed_ = null;
-        }
-        return expectCompressedBuilder_;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.StreamingInputCallRequest)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.StreamingInputCallRequest)
-    private static final grpc.testing.Messages.StreamingInputCallRequest DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.StreamingInputCallRequest();
-    }
-
-    public static grpc.testing.Messages.StreamingInputCallRequest getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<StreamingInputCallRequest>
-        PARSER = new com.google.protobuf.AbstractParser<StreamingInputCallRequest>() {
-      public StreamingInputCallRequest parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new StreamingInputCallRequest(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<StreamingInputCallRequest> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<StreamingInputCallRequest> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.StreamingInputCallRequest getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface StreamingInputCallResponseOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.StreamingInputCallResponse)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Aggregated size of payloads received from the client.
-     * </pre>
-     *
-     * <code>int32 aggregated_payload_size = 1;</code>
-     */
-    int getAggregatedPayloadSize();
-  }
-  /**
-   * <pre>
-   * Client-streaming response.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.StreamingInputCallResponse}
-   */
-  public  static final class StreamingInputCallResponse extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.StreamingInputCallResponse)
-      StreamingInputCallResponseOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use StreamingInputCallResponse.newBuilder() to construct.
-    private StreamingInputCallResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private StreamingInputCallResponse() {
-      aggregatedPayloadSize_ = 0;
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private StreamingInputCallResponse(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-
-              aggregatedPayloadSize_ = input.readInt32();
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_StreamingInputCallResponse_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_StreamingInputCallResponse_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.StreamingInputCallResponse.class, grpc.testing.Messages.StreamingInputCallResponse.Builder.class);
-    }
-
-    public static final int AGGREGATED_PAYLOAD_SIZE_FIELD_NUMBER = 1;
-    private int aggregatedPayloadSize_;
-    /**
-     * <pre>
-     * Aggregated size of payloads received from the client.
-     * </pre>
-     *
-     * <code>int32 aggregated_payload_size = 1;</code>
-     */
-    public int getAggregatedPayloadSize() {
-      return aggregatedPayloadSize_;
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (aggregatedPayloadSize_ != 0) {
-        output.writeInt32(1, aggregatedPayloadSize_);
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (aggregatedPayloadSize_ != 0) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(1, aggregatedPayloadSize_);
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.StreamingInputCallResponse)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.StreamingInputCallResponse other = (grpc.testing.Messages.StreamingInputCallResponse) obj;
-
-      boolean result = true;
-      result = result && (getAggregatedPayloadSize()
-          == other.getAggregatedPayloadSize());
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + AGGREGATED_PAYLOAD_SIZE_FIELD_NUMBER;
-      hash = (53 * hash) + getAggregatedPayloadSize();
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.StreamingInputCallResponse parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingInputCallResponse parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.StreamingInputCallResponse prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * Client-streaming response.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.StreamingInputCallResponse}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.StreamingInputCallResponse)
-        grpc.testing.Messages.StreamingInputCallResponseOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingInputCallResponse_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingInputCallResponse_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.StreamingInputCallResponse.class, grpc.testing.Messages.StreamingInputCallResponse.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.StreamingInputCallResponse.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        aggregatedPayloadSize_ = 0;
-
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingInputCallResponse_descriptor;
-      }
-
-      public grpc.testing.Messages.StreamingInputCallResponse getDefaultInstanceForType() {
-        return grpc.testing.Messages.StreamingInputCallResponse.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.StreamingInputCallResponse build() {
-        grpc.testing.Messages.StreamingInputCallResponse result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.StreamingInputCallResponse buildPartial() {
-        grpc.testing.Messages.StreamingInputCallResponse result = new grpc.testing.Messages.StreamingInputCallResponse(this);
-        result.aggregatedPayloadSize_ = aggregatedPayloadSize_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.StreamingInputCallResponse) {
-          return mergeFrom((grpc.testing.Messages.StreamingInputCallResponse)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.StreamingInputCallResponse other) {
-        if (other == grpc.testing.Messages.StreamingInputCallResponse.getDefaultInstance()) return this;
-        if (other.getAggregatedPayloadSize() != 0) {
-          setAggregatedPayloadSize(other.getAggregatedPayloadSize());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.StreamingInputCallResponse parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.StreamingInputCallResponse) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private int aggregatedPayloadSize_ ;
-      /**
-       * <pre>
-       * Aggregated size of payloads received from the client.
-       * </pre>
-       *
-       * <code>int32 aggregated_payload_size = 1;</code>
-       */
-      public int getAggregatedPayloadSize() {
-        return aggregatedPayloadSize_;
-      }
-      /**
-       * <pre>
-       * Aggregated size of payloads received from the client.
-       * </pre>
-       *
-       * <code>int32 aggregated_payload_size = 1;</code>
-       */
-      public Builder setAggregatedPayloadSize(int value) {
-        
-        aggregatedPayloadSize_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Aggregated size of payloads received from the client.
-       * </pre>
-       *
-       * <code>int32 aggregated_payload_size = 1;</code>
-       */
-      public Builder clearAggregatedPayloadSize() {
-        
-        aggregatedPayloadSize_ = 0;
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.StreamingInputCallResponse)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.StreamingInputCallResponse)
-    private static final grpc.testing.Messages.StreamingInputCallResponse DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.StreamingInputCallResponse();
-    }
-
-    public static grpc.testing.Messages.StreamingInputCallResponse getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<StreamingInputCallResponse>
-        PARSER = new com.google.protobuf.AbstractParser<StreamingInputCallResponse>() {
-      public StreamingInputCallResponse parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new StreamingInputCallResponse(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<StreamingInputCallResponse> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<StreamingInputCallResponse> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.StreamingInputCallResponse getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface ResponseParametersOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.ResponseParameters)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Desired payload sizes in responses from the server.
-     * </pre>
-     *
-     * <code>int32 size = 1;</code>
-     */
-    int getSize();
-
-    /**
-     * <pre>
-     * Desired interval between consecutive responses in the response stream in
-     * microseconds.
-     * </pre>
-     *
-     * <code>int32 interval_us = 2;</code>
-     */
-    int getIntervalUs();
-
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue compressed = 3;</code>
-     */
-    boolean hasCompressed();
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue compressed = 3;</code>
-     */
-    grpc.testing.Messages.BoolValue getCompressed();
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue compressed = 3;</code>
-     */
-    grpc.testing.Messages.BoolValueOrBuilder getCompressedOrBuilder();
-  }
-  /**
-   * <pre>
-   * Configuration for a particular response.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.ResponseParameters}
-   */
-  public  static final class ResponseParameters extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.ResponseParameters)
-      ResponseParametersOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use ResponseParameters.newBuilder() to construct.
-    private ResponseParameters(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private ResponseParameters() {
-      size_ = 0;
-      intervalUs_ = 0;
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private ResponseParameters(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-
-              size_ = input.readInt32();
-              break;
-            }
-            case 16: {
-
-              intervalUs_ = input.readInt32();
-              break;
-            }
-            case 26: {
-              grpc.testing.Messages.BoolValue.Builder subBuilder = null;
-              if (compressed_ != null) {
-                subBuilder = compressed_.toBuilder();
-              }
-              compressed_ = input.readMessage(grpc.testing.Messages.BoolValue.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(compressed_);
-                compressed_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_ResponseParameters_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_ResponseParameters_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.ResponseParameters.class, grpc.testing.Messages.ResponseParameters.Builder.class);
-    }
-
-    public static final int SIZE_FIELD_NUMBER = 1;
-    private int size_;
-    /**
-     * <pre>
-     * Desired payload sizes in responses from the server.
-     * </pre>
-     *
-     * <code>int32 size = 1;</code>
-     */
-    public int getSize() {
-      return size_;
-    }
-
-    public static final int INTERVAL_US_FIELD_NUMBER = 2;
-    private int intervalUs_;
-    /**
-     * <pre>
-     * Desired interval between consecutive responses in the response stream in
-     * microseconds.
-     * </pre>
-     *
-     * <code>int32 interval_us = 2;</code>
-     */
-    public int getIntervalUs() {
-      return intervalUs_;
-    }
-
-    public static final int COMPRESSED_FIELD_NUMBER = 3;
-    private grpc.testing.Messages.BoolValue compressed_;
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue compressed = 3;</code>
-     */
-    public boolean hasCompressed() {
-      return compressed_ != null;
-    }
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue compressed = 3;</code>
-     */
-    public grpc.testing.Messages.BoolValue getCompressed() {
-      return compressed_ == null ? grpc.testing.Messages.BoolValue.getDefaultInstance() : compressed_;
-    }
-    /**
-     * <pre>
-     * Whether to request the server to compress the response. This field is
-     * "nullable" in order to interoperate seamlessly with clients not able to
-     * implement the full compression tests by introspecting the call to verify
-     * the response's compression status.
-     * </pre>
-     *
-     * <code>.grpc.testing.BoolValue compressed = 3;</code>
-     */
-    public grpc.testing.Messages.BoolValueOrBuilder getCompressedOrBuilder() {
-      return getCompressed();
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (size_ != 0) {
-        output.writeInt32(1, size_);
-      }
-      if (intervalUs_ != 0) {
-        output.writeInt32(2, intervalUs_);
-      }
-      if (compressed_ != null) {
-        output.writeMessage(3, getCompressed());
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (size_ != 0) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(1, size_);
-      }
-      if (intervalUs_ != 0) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(2, intervalUs_);
-      }
-      if (compressed_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(3, getCompressed());
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.ResponseParameters)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.ResponseParameters other = (grpc.testing.Messages.ResponseParameters) obj;
-
-      boolean result = true;
-      result = result && (getSize()
-          == other.getSize());
-      result = result && (getIntervalUs()
-          == other.getIntervalUs());
-      result = result && (hasCompressed() == other.hasCompressed());
-      if (hasCompressed()) {
-        result = result && getCompressed()
-            .equals(other.getCompressed());
-      }
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + SIZE_FIELD_NUMBER;
-      hash = (53 * hash) + getSize();
-      hash = (37 * hash) + INTERVAL_US_FIELD_NUMBER;
-      hash = (53 * hash) + getIntervalUs();
-      if (hasCompressed()) {
-        hash = (37 * hash) + COMPRESSED_FIELD_NUMBER;
-        hash = (53 * hash) + getCompressed().hashCode();
-      }
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.ResponseParameters parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.ResponseParameters parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.ResponseParameters prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * Configuration for a particular response.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.ResponseParameters}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.ResponseParameters)
-        grpc.testing.Messages.ResponseParametersOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_ResponseParameters_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_ResponseParameters_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.ResponseParameters.class, grpc.testing.Messages.ResponseParameters.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.ResponseParameters.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        size_ = 0;
-
-        intervalUs_ = 0;
-
-        if (compressedBuilder_ == null) {
-          compressed_ = null;
-        } else {
-          compressed_ = null;
-          compressedBuilder_ = null;
-        }
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_ResponseParameters_descriptor;
-      }
-
-      public grpc.testing.Messages.ResponseParameters getDefaultInstanceForType() {
-        return grpc.testing.Messages.ResponseParameters.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.ResponseParameters build() {
-        grpc.testing.Messages.ResponseParameters result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.ResponseParameters buildPartial() {
-        grpc.testing.Messages.ResponseParameters result = new grpc.testing.Messages.ResponseParameters(this);
-        result.size_ = size_;
-        result.intervalUs_ = intervalUs_;
-        if (compressedBuilder_ == null) {
-          result.compressed_ = compressed_;
-        } else {
-          result.compressed_ = compressedBuilder_.build();
-        }
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.ResponseParameters) {
-          return mergeFrom((grpc.testing.Messages.ResponseParameters)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.ResponseParameters other) {
-        if (other == grpc.testing.Messages.ResponseParameters.getDefaultInstance()) return this;
-        if (other.getSize() != 0) {
-          setSize(other.getSize());
-        }
-        if (other.getIntervalUs() != 0) {
-          setIntervalUs(other.getIntervalUs());
-        }
-        if (other.hasCompressed()) {
-          mergeCompressed(other.getCompressed());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.ResponseParameters parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.ResponseParameters) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private int size_ ;
-      /**
-       * <pre>
-       * Desired payload sizes in responses from the server.
-       * </pre>
-       *
-       * <code>int32 size = 1;</code>
-       */
-      public int getSize() {
-        return size_;
-      }
-      /**
-       * <pre>
-       * Desired payload sizes in responses from the server.
-       * </pre>
-       *
-       * <code>int32 size = 1;</code>
-       */
-      public Builder setSize(int value) {
-        
-        size_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload sizes in responses from the server.
-       * </pre>
-       *
-       * <code>int32 size = 1;</code>
-       */
-      public Builder clearSize() {
-        
-        size_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private int intervalUs_ ;
-      /**
-       * <pre>
-       * Desired interval between consecutive responses in the response stream in
-       * microseconds.
-       * </pre>
-       *
-       * <code>int32 interval_us = 2;</code>
-       */
-      public int getIntervalUs() {
-        return intervalUs_;
-      }
-      /**
-       * <pre>
-       * Desired interval between consecutive responses in the response stream in
-       * microseconds.
-       * </pre>
-       *
-       * <code>int32 interval_us = 2;</code>
-       */
-      public Builder setIntervalUs(int value) {
-        
-        intervalUs_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired interval between consecutive responses in the response stream in
-       * microseconds.
-       * </pre>
-       *
-       * <code>int32 interval_us = 2;</code>
-       */
-      public Builder clearIntervalUs() {
-        
-        intervalUs_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private grpc.testing.Messages.BoolValue compressed_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder> compressedBuilder_;
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue compressed = 3;</code>
-       */
-      public boolean hasCompressed() {
-        return compressedBuilder_ != null || compressed_ != null;
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue compressed = 3;</code>
-       */
-      public grpc.testing.Messages.BoolValue getCompressed() {
-        if (compressedBuilder_ == null) {
-          return compressed_ == null ? grpc.testing.Messages.BoolValue.getDefaultInstance() : compressed_;
-        } else {
-          return compressedBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue compressed = 3;</code>
-       */
-      public Builder setCompressed(grpc.testing.Messages.BoolValue value) {
-        if (compressedBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          compressed_ = value;
-          onChanged();
-        } else {
-          compressedBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue compressed = 3;</code>
-       */
-      public Builder setCompressed(
-          grpc.testing.Messages.BoolValue.Builder builderForValue) {
-        if (compressedBuilder_ == null) {
-          compressed_ = builderForValue.build();
-          onChanged();
-        } else {
-          compressedBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue compressed = 3;</code>
-       */
-      public Builder mergeCompressed(grpc.testing.Messages.BoolValue value) {
-        if (compressedBuilder_ == null) {
-          if (compressed_ != null) {
-            compressed_ =
-              grpc.testing.Messages.BoolValue.newBuilder(compressed_).mergeFrom(value).buildPartial();
-          } else {
-            compressed_ = value;
-          }
-          onChanged();
-        } else {
-          compressedBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue compressed = 3;</code>
-       */
-      public Builder clearCompressed() {
-        if (compressedBuilder_ == null) {
-          compressed_ = null;
-          onChanged();
-        } else {
-          compressed_ = null;
-          compressedBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue compressed = 3;</code>
-       */
-      public grpc.testing.Messages.BoolValue.Builder getCompressedBuilder() {
-        
-        onChanged();
-        return getCompressedFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue compressed = 3;</code>
-       */
-      public grpc.testing.Messages.BoolValueOrBuilder getCompressedOrBuilder() {
-        if (compressedBuilder_ != null) {
-          return compressedBuilder_.getMessageOrBuilder();
-        } else {
-          return compressed_ == null ?
-              grpc.testing.Messages.BoolValue.getDefaultInstance() : compressed_;
-        }
-      }
-      /**
-       * <pre>
-       * Whether to request the server to compress the response. This field is
-       * "nullable" in order to interoperate seamlessly with clients not able to
-       * implement the full compression tests by introspecting the call to verify
-       * the response's compression status.
-       * </pre>
-       *
-       * <code>.grpc.testing.BoolValue compressed = 3;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder> 
-          getCompressedFieldBuilder() {
-        if (compressedBuilder_ == null) {
-          compressedBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.BoolValue, grpc.testing.Messages.BoolValue.Builder, grpc.testing.Messages.BoolValueOrBuilder>(
-                  getCompressed(),
-                  getParentForChildren(),
-                  isClean());
-          compressed_ = null;
-        }
-        return compressedBuilder_;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.ResponseParameters)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.ResponseParameters)
-    private static final grpc.testing.Messages.ResponseParameters DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.ResponseParameters();
-    }
-
-    public static grpc.testing.Messages.ResponseParameters getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<ResponseParameters>
-        PARSER = new com.google.protobuf.AbstractParser<ResponseParameters>() {
-      public ResponseParameters parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new ResponseParameters(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<ResponseParameters> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<ResponseParameters> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.ResponseParameters getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface StreamingOutputCallRequestOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.StreamingOutputCallRequest)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, the payload from each response in the stream
-     * might be of different types. This is to simulate a mixed type of payload
-     * stream.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    int getResponseTypeValue();
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, the payload from each response in the stream
-     * might be of different types. This is to simulate a mixed type of payload
-     * stream.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    grpc.testing.Messages.PayloadType getResponseType();
-
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    java.util.List<grpc.testing.Messages.ResponseParameters> 
-        getResponseParametersList();
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    grpc.testing.Messages.ResponseParameters getResponseParameters(int index);
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    int getResponseParametersCount();
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    java.util.List<? extends grpc.testing.Messages.ResponseParametersOrBuilder> 
-        getResponseParametersOrBuilderList();
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    grpc.testing.Messages.ResponseParametersOrBuilder getResponseParametersOrBuilder(
-        int index);
-
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    boolean hasPayload();
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    grpc.testing.Messages.Payload getPayload();
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder();
-
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    boolean hasResponseStatus();
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    grpc.testing.Messages.EchoStatus getResponseStatus();
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    grpc.testing.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder();
-  }
-  /**
-   * <pre>
-   * Server-streaming request.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.StreamingOutputCallRequest}
-   */
-  public  static final class StreamingOutputCallRequest extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.StreamingOutputCallRequest)
-      StreamingOutputCallRequestOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use StreamingOutputCallRequest.newBuilder() to construct.
-    private StreamingOutputCallRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private StreamingOutputCallRequest() {
-      responseType_ = 0;
-      responseParameters_ = java.util.Collections.emptyList();
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private StreamingOutputCallRequest(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-              int rawValue = input.readEnum();
-
-              responseType_ = rawValue;
-              break;
-            }
-            case 18: {
-              if (!((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
-                responseParameters_ = new java.util.ArrayList<grpc.testing.Messages.ResponseParameters>();
-                mutable_bitField0_ |= 0x00000002;
-              }
-              responseParameters_.add(
-                  input.readMessage(grpc.testing.Messages.ResponseParameters.parser(), extensionRegistry));
-              break;
-            }
-            case 26: {
-              grpc.testing.Messages.Payload.Builder subBuilder = null;
-              if (payload_ != null) {
-                subBuilder = payload_.toBuilder();
-              }
-              payload_ = input.readMessage(grpc.testing.Messages.Payload.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(payload_);
-                payload_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-            case 58: {
-              grpc.testing.Messages.EchoStatus.Builder subBuilder = null;
-              if (responseStatus_ != null) {
-                subBuilder = responseStatus_.toBuilder();
-              }
-              responseStatus_ = input.readMessage(grpc.testing.Messages.EchoStatus.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(responseStatus_);
-                responseStatus_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        if (((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
-          responseParameters_ = java.util.Collections.unmodifiableList(responseParameters_);
-        }
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_StreamingOutputCallRequest_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_StreamingOutputCallRequest_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.StreamingOutputCallRequest.class, grpc.testing.Messages.StreamingOutputCallRequest.Builder.class);
-    }
-
-    private int bitField0_;
-    public static final int RESPONSE_TYPE_FIELD_NUMBER = 1;
-    private int responseType_;
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, the payload from each response in the stream
-     * might be of different types. This is to simulate a mixed type of payload
-     * stream.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    public int getResponseTypeValue() {
-      return responseType_;
-    }
-    /**
-     * <pre>
-     * Desired payload type in the response from the server.
-     * If response_type is RANDOM, the payload from each response in the stream
-     * might be of different types. This is to simulate a mixed type of payload
-     * stream.
-     * </pre>
-     *
-     * <code>.grpc.testing.PayloadType response_type = 1;</code>
-     */
-    public grpc.testing.Messages.PayloadType getResponseType() {
-      grpc.testing.Messages.PayloadType result = grpc.testing.Messages.PayloadType.valueOf(responseType_);
-      return result == null ? grpc.testing.Messages.PayloadType.UNRECOGNIZED : result;
-    }
-
-    public static final int RESPONSE_PARAMETERS_FIELD_NUMBER = 2;
-    private java.util.List<grpc.testing.Messages.ResponseParameters> responseParameters_;
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    public java.util.List<grpc.testing.Messages.ResponseParameters> getResponseParametersList() {
-      return responseParameters_;
-    }
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    public java.util.List<? extends grpc.testing.Messages.ResponseParametersOrBuilder> 
-        getResponseParametersOrBuilderList() {
-      return responseParameters_;
-    }
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    public int getResponseParametersCount() {
-      return responseParameters_.size();
-    }
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    public grpc.testing.Messages.ResponseParameters getResponseParameters(int index) {
-      return responseParameters_.get(index);
-    }
-    /**
-     * <pre>
-     * Configuration for each expected response message.
-     * </pre>
-     *
-     * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-     */
-    public grpc.testing.Messages.ResponseParametersOrBuilder getResponseParametersOrBuilder(
-        int index) {
-      return responseParameters_.get(index);
-    }
-
-    public static final int PAYLOAD_FIELD_NUMBER = 3;
-    private grpc.testing.Messages.Payload payload_;
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public boolean hasPayload() {
-      return payload_ != null;
-    }
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public grpc.testing.Messages.Payload getPayload() {
-      return payload_ == null ? grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-    }
-    /**
-     * <pre>
-     * Optional input payload sent along with the request.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 3;</code>
-     */
-    public grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-      return getPayload();
-    }
-
-    public static final int RESPONSE_STATUS_FIELD_NUMBER = 7;
-    private grpc.testing.Messages.EchoStatus responseStatus_;
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public boolean hasResponseStatus() {
-      return responseStatus_ != null;
-    }
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public grpc.testing.Messages.EchoStatus getResponseStatus() {
-      return responseStatus_ == null ? grpc.testing.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-    }
-    /**
-     * <pre>
-     * Whether server should return a given status
-     * </pre>
-     *
-     * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-     */
-    public grpc.testing.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder() {
-      return getResponseStatus();
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (responseType_ != grpc.testing.Messages.PayloadType.COMPRESSABLE.getNumber()) {
-        output.writeEnum(1, responseType_);
-      }
-      for (int i = 0; i < responseParameters_.size(); i++) {
-        output.writeMessage(2, responseParameters_.get(i));
-      }
-      if (payload_ != null) {
-        output.writeMessage(3, getPayload());
-      }
-      if (responseStatus_ != null) {
-        output.writeMessage(7, getResponseStatus());
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (responseType_ != grpc.testing.Messages.PayloadType.COMPRESSABLE.getNumber()) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(1, responseType_);
-      }
-      for (int i = 0; i < responseParameters_.size(); i++) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(2, responseParameters_.get(i));
-      }
-      if (payload_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(3, getPayload());
-      }
-      if (responseStatus_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(7, getResponseStatus());
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.StreamingOutputCallRequest)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.StreamingOutputCallRequest other = (grpc.testing.Messages.StreamingOutputCallRequest) obj;
-
-      boolean result = true;
-      result = result && responseType_ == other.responseType_;
-      result = result && getResponseParametersList()
-          .equals(other.getResponseParametersList());
-      result = result && (hasPayload() == other.hasPayload());
-      if (hasPayload()) {
-        result = result && getPayload()
-            .equals(other.getPayload());
-      }
-      result = result && (hasResponseStatus() == other.hasResponseStatus());
-      if (hasResponseStatus()) {
-        result = result && getResponseStatus()
-            .equals(other.getResponseStatus());
-      }
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + RESPONSE_TYPE_FIELD_NUMBER;
-      hash = (53 * hash) + responseType_;
-      if (getResponseParametersCount() > 0) {
-        hash = (37 * hash) + RESPONSE_PARAMETERS_FIELD_NUMBER;
-        hash = (53 * hash) + getResponseParametersList().hashCode();
-      }
-      if (hasPayload()) {
-        hash = (37 * hash) + PAYLOAD_FIELD_NUMBER;
-        hash = (53 * hash) + getPayload().hashCode();
-      }
-      if (hasResponseStatus()) {
-        hash = (37 * hash) + RESPONSE_STATUS_FIELD_NUMBER;
-        hash = (53 * hash) + getResponseStatus().hashCode();
-      }
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallRequest parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.StreamingOutputCallRequest prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * Server-streaming request.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.StreamingOutputCallRequest}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.StreamingOutputCallRequest)
-        grpc.testing.Messages.StreamingOutputCallRequestOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingOutputCallRequest_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingOutputCallRequest_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.StreamingOutputCallRequest.class, grpc.testing.Messages.StreamingOutputCallRequest.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.StreamingOutputCallRequest.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-          getResponseParametersFieldBuilder();
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        responseType_ = 0;
-
-        if (responseParametersBuilder_ == null) {
-          responseParameters_ = java.util.Collections.emptyList();
-          bitField0_ = (bitField0_ & ~0x00000002);
-        } else {
-          responseParametersBuilder_.clear();
-        }
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = null;
-        } else {
-          responseStatus_ = null;
-          responseStatusBuilder_ = null;
-        }
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingOutputCallRequest_descriptor;
-      }
-
-      public grpc.testing.Messages.StreamingOutputCallRequest getDefaultInstanceForType() {
-        return grpc.testing.Messages.StreamingOutputCallRequest.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.StreamingOutputCallRequest build() {
-        grpc.testing.Messages.StreamingOutputCallRequest result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.StreamingOutputCallRequest buildPartial() {
-        grpc.testing.Messages.StreamingOutputCallRequest result = new grpc.testing.Messages.StreamingOutputCallRequest(this);
-        int from_bitField0_ = bitField0_;
-        int to_bitField0_ = 0;
-        result.responseType_ = responseType_;
-        if (responseParametersBuilder_ == null) {
-          if (((bitField0_ & 0x00000002) == 0x00000002)) {
-            responseParameters_ = java.util.Collections.unmodifiableList(responseParameters_);
-            bitField0_ = (bitField0_ & ~0x00000002);
-          }
-          result.responseParameters_ = responseParameters_;
-        } else {
-          result.responseParameters_ = responseParametersBuilder_.build();
-        }
-        if (payloadBuilder_ == null) {
-          result.payload_ = payload_;
-        } else {
-          result.payload_ = payloadBuilder_.build();
-        }
-        if (responseStatusBuilder_ == null) {
-          result.responseStatus_ = responseStatus_;
-        } else {
-          result.responseStatus_ = responseStatusBuilder_.build();
-        }
-        result.bitField0_ = to_bitField0_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.StreamingOutputCallRequest) {
-          return mergeFrom((grpc.testing.Messages.StreamingOutputCallRequest)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.StreamingOutputCallRequest other) {
-        if (other == grpc.testing.Messages.StreamingOutputCallRequest.getDefaultInstance()) return this;
-        if (other.responseType_ != 0) {
-          setResponseTypeValue(other.getResponseTypeValue());
-        }
-        if (responseParametersBuilder_ == null) {
-          if (!other.responseParameters_.isEmpty()) {
-            if (responseParameters_.isEmpty()) {
-              responseParameters_ = other.responseParameters_;
-              bitField0_ = (bitField0_ & ~0x00000002);
-            } else {
-              ensureResponseParametersIsMutable();
-              responseParameters_.addAll(other.responseParameters_);
-            }
-            onChanged();
-          }
-        } else {
-          if (!other.responseParameters_.isEmpty()) {
-            if (responseParametersBuilder_.isEmpty()) {
-              responseParametersBuilder_.dispose();
-              responseParametersBuilder_ = null;
-              responseParameters_ = other.responseParameters_;
-              bitField0_ = (bitField0_ & ~0x00000002);
-              responseParametersBuilder_ = 
-                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
-                   getResponseParametersFieldBuilder() : null;
-            } else {
-              responseParametersBuilder_.addAllMessages(other.responseParameters_);
-            }
-          }
-        }
-        if (other.hasPayload()) {
-          mergePayload(other.getPayload());
-        }
-        if (other.hasResponseStatus()) {
-          mergeResponseStatus(other.getResponseStatus());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.StreamingOutputCallRequest parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.StreamingOutputCallRequest) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-      private int bitField0_;
-
-      private int responseType_ = 0;
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, the payload from each response in the stream
-       * might be of different types. This is to simulate a mixed type of payload
-       * stream.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public int getResponseTypeValue() {
-        return responseType_;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, the payload from each response in the stream
-       * might be of different types. This is to simulate a mixed type of payload
-       * stream.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder setResponseTypeValue(int value) {
-        responseType_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, the payload from each response in the stream
-       * might be of different types. This is to simulate a mixed type of payload
-       * stream.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public grpc.testing.Messages.PayloadType getResponseType() {
-        grpc.testing.Messages.PayloadType result = grpc.testing.Messages.PayloadType.valueOf(responseType_);
-        return result == null ? grpc.testing.Messages.PayloadType.UNRECOGNIZED : result;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, the payload from each response in the stream
-       * might be of different types. This is to simulate a mixed type of payload
-       * stream.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder setResponseType(grpc.testing.Messages.PayloadType value) {
-        if (value == null) {
-          throw new NullPointerException();
-        }
-        
-        responseType_ = value.getNumber();
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Desired payload type in the response from the server.
-       * If response_type is RANDOM, the payload from each response in the stream
-       * might be of different types. This is to simulate a mixed type of payload
-       * stream.
-       * </pre>
-       *
-       * <code>.grpc.testing.PayloadType response_type = 1;</code>
-       */
-      public Builder clearResponseType() {
-        
-        responseType_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private java.util.List<grpc.testing.Messages.ResponseParameters> responseParameters_ =
-        java.util.Collections.emptyList();
-      private void ensureResponseParametersIsMutable() {
-        if (!((bitField0_ & 0x00000002) == 0x00000002)) {
-          responseParameters_ = new java.util.ArrayList<grpc.testing.Messages.ResponseParameters>(responseParameters_);
-          bitField0_ |= 0x00000002;
-         }
-      }
-
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          grpc.testing.Messages.ResponseParameters, grpc.testing.Messages.ResponseParameters.Builder, grpc.testing.Messages.ResponseParametersOrBuilder> responseParametersBuilder_;
-
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public java.util.List<grpc.testing.Messages.ResponseParameters> getResponseParametersList() {
-        if (responseParametersBuilder_ == null) {
-          return java.util.Collections.unmodifiableList(responseParameters_);
-        } else {
-          return responseParametersBuilder_.getMessageList();
-        }
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public int getResponseParametersCount() {
-        if (responseParametersBuilder_ == null) {
-          return responseParameters_.size();
-        } else {
-          return responseParametersBuilder_.getCount();
-        }
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public grpc.testing.Messages.ResponseParameters getResponseParameters(int index) {
-        if (responseParametersBuilder_ == null) {
-          return responseParameters_.get(index);
-        } else {
-          return responseParametersBuilder_.getMessage(index);
-        }
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder setResponseParameters(
-          int index, grpc.testing.Messages.ResponseParameters value) {
-        if (responseParametersBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureResponseParametersIsMutable();
-          responseParameters_.set(index, value);
-          onChanged();
-        } else {
-          responseParametersBuilder_.setMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder setResponseParameters(
-          int index, grpc.testing.Messages.ResponseParameters.Builder builderForValue) {
-        if (responseParametersBuilder_ == null) {
-          ensureResponseParametersIsMutable();
-          responseParameters_.set(index, builderForValue.build());
-          onChanged();
-        } else {
-          responseParametersBuilder_.setMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder addResponseParameters(grpc.testing.Messages.ResponseParameters value) {
-        if (responseParametersBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureResponseParametersIsMutable();
-          responseParameters_.add(value);
-          onChanged();
-        } else {
-          responseParametersBuilder_.addMessage(value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder addResponseParameters(
-          int index, grpc.testing.Messages.ResponseParameters value) {
-        if (responseParametersBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureResponseParametersIsMutable();
-          responseParameters_.add(index, value);
-          onChanged();
-        } else {
-          responseParametersBuilder_.addMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder addResponseParameters(
-          grpc.testing.Messages.ResponseParameters.Builder builderForValue) {
-        if (responseParametersBuilder_ == null) {
-          ensureResponseParametersIsMutable();
-          responseParameters_.add(builderForValue.build());
-          onChanged();
-        } else {
-          responseParametersBuilder_.addMessage(builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder addResponseParameters(
-          int index, grpc.testing.Messages.ResponseParameters.Builder builderForValue) {
-        if (responseParametersBuilder_ == null) {
-          ensureResponseParametersIsMutable();
-          responseParameters_.add(index, builderForValue.build());
-          onChanged();
-        } else {
-          responseParametersBuilder_.addMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder addAllResponseParameters(
-          java.lang.Iterable<? extends grpc.testing.Messages.ResponseParameters> values) {
-        if (responseParametersBuilder_ == null) {
-          ensureResponseParametersIsMutable();
-          com.google.protobuf.AbstractMessageLite.Builder.addAll(
-              values, responseParameters_);
-          onChanged();
-        } else {
-          responseParametersBuilder_.addAllMessages(values);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder clearResponseParameters() {
-        if (responseParametersBuilder_ == null) {
-          responseParameters_ = java.util.Collections.emptyList();
-          bitField0_ = (bitField0_ & ~0x00000002);
-          onChanged();
-        } else {
-          responseParametersBuilder_.clear();
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public Builder removeResponseParameters(int index) {
-        if (responseParametersBuilder_ == null) {
-          ensureResponseParametersIsMutable();
-          responseParameters_.remove(index);
-          onChanged();
-        } else {
-          responseParametersBuilder_.remove(index);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public grpc.testing.Messages.ResponseParameters.Builder getResponseParametersBuilder(
-          int index) {
-        return getResponseParametersFieldBuilder().getBuilder(index);
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public grpc.testing.Messages.ResponseParametersOrBuilder getResponseParametersOrBuilder(
-          int index) {
-        if (responseParametersBuilder_ == null) {
-          return responseParameters_.get(index);  } else {
-          return responseParametersBuilder_.getMessageOrBuilder(index);
-        }
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public java.util.List<? extends grpc.testing.Messages.ResponseParametersOrBuilder> 
-           getResponseParametersOrBuilderList() {
-        if (responseParametersBuilder_ != null) {
-          return responseParametersBuilder_.getMessageOrBuilderList();
-        } else {
-          return java.util.Collections.unmodifiableList(responseParameters_);
-        }
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public grpc.testing.Messages.ResponseParameters.Builder addResponseParametersBuilder() {
-        return getResponseParametersFieldBuilder().addBuilder(
-            grpc.testing.Messages.ResponseParameters.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public grpc.testing.Messages.ResponseParameters.Builder addResponseParametersBuilder(
-          int index) {
-        return getResponseParametersFieldBuilder().addBuilder(
-            index, grpc.testing.Messages.ResponseParameters.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * Configuration for each expected response message.
-       * </pre>
-       *
-       * <code>repeated .grpc.testing.ResponseParameters response_parameters = 2;</code>
-       */
-      public java.util.List<grpc.testing.Messages.ResponseParameters.Builder> 
-           getResponseParametersBuilderList() {
-        return getResponseParametersFieldBuilder().getBuilderList();
-      }
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          grpc.testing.Messages.ResponseParameters, grpc.testing.Messages.ResponseParameters.Builder, grpc.testing.Messages.ResponseParametersOrBuilder> 
-          getResponseParametersFieldBuilder() {
-        if (responseParametersBuilder_ == null) {
-          responseParametersBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
-              grpc.testing.Messages.ResponseParameters, grpc.testing.Messages.ResponseParameters.Builder, grpc.testing.Messages.ResponseParametersOrBuilder>(
-                  responseParameters_,
-                  ((bitField0_ & 0x00000002) == 0x00000002),
-                  getParentForChildren(),
-                  isClean());
-          responseParameters_ = null;
-        }
-        return responseParametersBuilder_;
-      }
-
-      private grpc.testing.Messages.Payload payload_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder> payloadBuilder_;
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public boolean hasPayload() {
-        return payloadBuilder_ != null || payload_ != null;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public grpc.testing.Messages.Payload getPayload() {
-        if (payloadBuilder_ == null) {
-          return payload_ == null ? grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-        } else {
-          return payloadBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder setPayload(grpc.testing.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          payload_ = value;
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder setPayload(
-          grpc.testing.Messages.Payload.Builder builderForValue) {
-        if (payloadBuilder_ == null) {
-          payload_ = builderForValue.build();
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder mergePayload(grpc.testing.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (payload_ != null) {
-            payload_ =
-              grpc.testing.Messages.Payload.newBuilder(payload_).mergeFrom(value).buildPartial();
-          } else {
-            payload_ = value;
-          }
-          onChanged();
-        } else {
-          payloadBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public Builder clearPayload() {
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-          onChanged();
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public grpc.testing.Messages.Payload.Builder getPayloadBuilder() {
-        
-        onChanged();
-        return getPayloadFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      public grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-        if (payloadBuilder_ != null) {
-          return payloadBuilder_.getMessageOrBuilder();
-        } else {
-          return payload_ == null ?
-              grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-        }
-      }
-      /**
-       * <pre>
-       * Optional input payload sent along with the request.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 3;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder> 
-          getPayloadFieldBuilder() {
-        if (payloadBuilder_ == null) {
-          payloadBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder>(
-                  getPayload(),
-                  getParentForChildren(),
-                  isClean());
-          payload_ = null;
-        }
-        return payloadBuilder_;
-      }
-
-      private grpc.testing.Messages.EchoStatus responseStatus_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.EchoStatus, grpc.testing.Messages.EchoStatus.Builder, grpc.testing.Messages.EchoStatusOrBuilder> responseStatusBuilder_;
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public boolean hasResponseStatus() {
-        return responseStatusBuilder_ != null || responseStatus_ != null;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public grpc.testing.Messages.EchoStatus getResponseStatus() {
-        if (responseStatusBuilder_ == null) {
-          return responseStatus_ == null ? grpc.testing.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-        } else {
-          return responseStatusBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder setResponseStatus(grpc.testing.Messages.EchoStatus value) {
-        if (responseStatusBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          responseStatus_ = value;
-          onChanged();
-        } else {
-          responseStatusBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder setResponseStatus(
-          grpc.testing.Messages.EchoStatus.Builder builderForValue) {
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = builderForValue.build();
-          onChanged();
-        } else {
-          responseStatusBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder mergeResponseStatus(grpc.testing.Messages.EchoStatus value) {
-        if (responseStatusBuilder_ == null) {
-          if (responseStatus_ != null) {
-            responseStatus_ =
-              grpc.testing.Messages.EchoStatus.newBuilder(responseStatus_).mergeFrom(value).buildPartial();
-          } else {
-            responseStatus_ = value;
-          }
-          onChanged();
-        } else {
-          responseStatusBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public Builder clearResponseStatus() {
-        if (responseStatusBuilder_ == null) {
-          responseStatus_ = null;
-          onChanged();
-        } else {
-          responseStatus_ = null;
-          responseStatusBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public grpc.testing.Messages.EchoStatus.Builder getResponseStatusBuilder() {
-        
-        onChanged();
-        return getResponseStatusFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      public grpc.testing.Messages.EchoStatusOrBuilder getResponseStatusOrBuilder() {
-        if (responseStatusBuilder_ != null) {
-          return responseStatusBuilder_.getMessageOrBuilder();
-        } else {
-          return responseStatus_ == null ?
-              grpc.testing.Messages.EchoStatus.getDefaultInstance() : responseStatus_;
-        }
-      }
-      /**
-       * <pre>
-       * Whether server should return a given status
-       * </pre>
-       *
-       * <code>.grpc.testing.EchoStatus response_status = 7;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.EchoStatus, grpc.testing.Messages.EchoStatus.Builder, grpc.testing.Messages.EchoStatusOrBuilder> 
-          getResponseStatusFieldBuilder() {
-        if (responseStatusBuilder_ == null) {
-          responseStatusBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.EchoStatus, grpc.testing.Messages.EchoStatus.Builder, grpc.testing.Messages.EchoStatusOrBuilder>(
-                  getResponseStatus(),
-                  getParentForChildren(),
-                  isClean());
-          responseStatus_ = null;
-        }
-        return responseStatusBuilder_;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.StreamingOutputCallRequest)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.StreamingOutputCallRequest)
-    private static final grpc.testing.Messages.StreamingOutputCallRequest DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.StreamingOutputCallRequest();
-    }
-
-    public static grpc.testing.Messages.StreamingOutputCallRequest getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<StreamingOutputCallRequest>
-        PARSER = new com.google.protobuf.AbstractParser<StreamingOutputCallRequest>() {
-      public StreamingOutputCallRequest parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new StreamingOutputCallRequest(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<StreamingOutputCallRequest> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<StreamingOutputCallRequest> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.StreamingOutputCallRequest getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface StreamingOutputCallResponseOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.StreamingOutputCallResponse)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    boolean hasPayload();
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    grpc.testing.Messages.Payload getPayload();
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder();
-  }
-  /**
-   * <pre>
-   * Server-streaming response, as configured by the request and parameters.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.StreamingOutputCallResponse}
-   */
-  public  static final class StreamingOutputCallResponse extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.StreamingOutputCallResponse)
-      StreamingOutputCallResponseOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use StreamingOutputCallResponse.newBuilder() to construct.
-    private StreamingOutputCallResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private StreamingOutputCallResponse() {
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private StreamingOutputCallResponse(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 10: {
-              grpc.testing.Messages.Payload.Builder subBuilder = null;
-              if (payload_ != null) {
-                subBuilder = payload_.toBuilder();
-              }
-              payload_ = input.readMessage(grpc.testing.Messages.Payload.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(payload_);
-                payload_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_StreamingOutputCallResponse_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_StreamingOutputCallResponse_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.StreamingOutputCallResponse.class, grpc.testing.Messages.StreamingOutputCallResponse.Builder.class);
-    }
-
-    public static final int PAYLOAD_FIELD_NUMBER = 1;
-    private grpc.testing.Messages.Payload payload_;
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public boolean hasPayload() {
-      return payload_ != null;
-    }
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public grpc.testing.Messages.Payload getPayload() {
-      return payload_ == null ? grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-    }
-    /**
-     * <pre>
-     * Payload to increase response size.
-     * </pre>
-     *
-     * <code>.grpc.testing.Payload payload = 1;</code>
-     */
-    public grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-      return getPayload();
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (payload_ != null) {
-        output.writeMessage(1, getPayload());
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (payload_ != null) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(1, getPayload());
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.StreamingOutputCallResponse)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.StreamingOutputCallResponse other = (grpc.testing.Messages.StreamingOutputCallResponse) obj;
-
-      boolean result = true;
-      result = result && (hasPayload() == other.hasPayload());
-      if (hasPayload()) {
-        result = result && getPayload()
-            .equals(other.getPayload());
-      }
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      if (hasPayload()) {
-        hash = (37 * hash) + PAYLOAD_FIELD_NUMBER;
-        hash = (53 * hash) + getPayload().hashCode();
-      }
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.StreamingOutputCallResponse parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.StreamingOutputCallResponse prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * Server-streaming response, as configured by the request and parameters.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.StreamingOutputCallResponse}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.StreamingOutputCallResponse)
-        grpc.testing.Messages.StreamingOutputCallResponseOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingOutputCallResponse_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingOutputCallResponse_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.StreamingOutputCallResponse.class, grpc.testing.Messages.StreamingOutputCallResponse.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.StreamingOutputCallResponse.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_StreamingOutputCallResponse_descriptor;
-      }
-
-      public grpc.testing.Messages.StreamingOutputCallResponse getDefaultInstanceForType() {
-        return grpc.testing.Messages.StreamingOutputCallResponse.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.StreamingOutputCallResponse build() {
-        grpc.testing.Messages.StreamingOutputCallResponse result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.StreamingOutputCallResponse buildPartial() {
-        grpc.testing.Messages.StreamingOutputCallResponse result = new grpc.testing.Messages.StreamingOutputCallResponse(this);
-        if (payloadBuilder_ == null) {
-          result.payload_ = payload_;
-        } else {
-          result.payload_ = payloadBuilder_.build();
-        }
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.StreamingOutputCallResponse) {
-          return mergeFrom((grpc.testing.Messages.StreamingOutputCallResponse)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.StreamingOutputCallResponse other) {
-        if (other == grpc.testing.Messages.StreamingOutputCallResponse.getDefaultInstance()) return this;
-        if (other.hasPayload()) {
-          mergePayload(other.getPayload());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.StreamingOutputCallResponse parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.StreamingOutputCallResponse) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private grpc.testing.Messages.Payload payload_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder> payloadBuilder_;
-      /**
-       * <pre>
-       * Payload to increase response size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public boolean hasPayload() {
-        return payloadBuilder_ != null || payload_ != null;
-      }
-      /**
-       * <pre>
-       * Payload to increase response size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public grpc.testing.Messages.Payload getPayload() {
-        if (payloadBuilder_ == null) {
-          return payload_ == null ? grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-        } else {
-          return payloadBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * Payload to increase response size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder setPayload(grpc.testing.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          payload_ = value;
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Payload to increase response size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder setPayload(
-          grpc.testing.Messages.Payload.Builder builderForValue) {
-        if (payloadBuilder_ == null) {
-          payload_ = builderForValue.build();
-          onChanged();
-        } else {
-          payloadBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Payload to increase response size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder mergePayload(grpc.testing.Messages.Payload value) {
-        if (payloadBuilder_ == null) {
-          if (payload_ != null) {
-            payload_ =
-              grpc.testing.Messages.Payload.newBuilder(payload_).mergeFrom(value).buildPartial();
-          } else {
-            payload_ = value;
-          }
-          onChanged();
-        } else {
-          payloadBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Payload to increase response size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public Builder clearPayload() {
-        if (payloadBuilder_ == null) {
-          payload_ = null;
-          onChanged();
-        } else {
-          payload_ = null;
-          payloadBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * Payload to increase response size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public grpc.testing.Messages.Payload.Builder getPayloadBuilder() {
-        
-        onChanged();
-        return getPayloadFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * Payload to increase response size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      public grpc.testing.Messages.PayloadOrBuilder getPayloadOrBuilder() {
-        if (payloadBuilder_ != null) {
-          return payloadBuilder_.getMessageOrBuilder();
-        } else {
-          return payload_ == null ?
-              grpc.testing.Messages.Payload.getDefaultInstance() : payload_;
-        }
-      }
-      /**
-       * <pre>
-       * Payload to increase response size.
-       * </pre>
-       *
-       * <code>.grpc.testing.Payload payload = 1;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder> 
-          getPayloadFieldBuilder() {
-        if (payloadBuilder_ == null) {
-          payloadBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              grpc.testing.Messages.Payload, grpc.testing.Messages.Payload.Builder, grpc.testing.Messages.PayloadOrBuilder>(
-                  getPayload(),
-                  getParentForChildren(),
-                  isClean());
-          payload_ = null;
-        }
-        return payloadBuilder_;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.StreamingOutputCallResponse)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.StreamingOutputCallResponse)
-    private static final grpc.testing.Messages.StreamingOutputCallResponse DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.StreamingOutputCallResponse();
-    }
-
-    public static grpc.testing.Messages.StreamingOutputCallResponse getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<StreamingOutputCallResponse>
-        PARSER = new com.google.protobuf.AbstractParser<StreamingOutputCallResponse>() {
-      public StreamingOutputCallResponse parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new StreamingOutputCallResponse(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<StreamingOutputCallResponse> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<StreamingOutputCallResponse> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.StreamingOutputCallResponse getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface ReconnectParamsOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.ReconnectParams)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <code>int32 max_reconnect_backoff_ms = 1;</code>
-     */
-    int getMaxReconnectBackoffMs();
-  }
-  /**
-   * <pre>
-   * For reconnect interop test only.
-   * Client tells server what reconnection parameters it used.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.ReconnectParams}
-   */
-  public  static final class ReconnectParams extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.ReconnectParams)
-      ReconnectParamsOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use ReconnectParams.newBuilder() to construct.
-    private ReconnectParams(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private ReconnectParams() {
-      maxReconnectBackoffMs_ = 0;
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private ReconnectParams(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-
-              maxReconnectBackoffMs_ = input.readInt32();
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_ReconnectParams_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_ReconnectParams_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.ReconnectParams.class, grpc.testing.Messages.ReconnectParams.Builder.class);
-    }
-
-    public static final int MAX_RECONNECT_BACKOFF_MS_FIELD_NUMBER = 1;
-    private int maxReconnectBackoffMs_;
-    /**
-     * <code>int32 max_reconnect_backoff_ms = 1;</code>
-     */
-    public int getMaxReconnectBackoffMs() {
-      return maxReconnectBackoffMs_;
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (maxReconnectBackoffMs_ != 0) {
-        output.writeInt32(1, maxReconnectBackoffMs_);
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (maxReconnectBackoffMs_ != 0) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(1, maxReconnectBackoffMs_);
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.ReconnectParams)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.ReconnectParams other = (grpc.testing.Messages.ReconnectParams) obj;
-
-      boolean result = true;
-      result = result && (getMaxReconnectBackoffMs()
-          == other.getMaxReconnectBackoffMs());
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + MAX_RECONNECT_BACKOFF_MS_FIELD_NUMBER;
-      hash = (53 * hash) + getMaxReconnectBackoffMs();
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.ReconnectParams parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.ReconnectParams parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.ReconnectParams prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * For reconnect interop test only.
-     * Client tells server what reconnection parameters it used.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.ReconnectParams}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.ReconnectParams)
-        grpc.testing.Messages.ReconnectParamsOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_ReconnectParams_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_ReconnectParams_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.ReconnectParams.class, grpc.testing.Messages.ReconnectParams.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.ReconnectParams.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        maxReconnectBackoffMs_ = 0;
-
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_ReconnectParams_descriptor;
-      }
-
-      public grpc.testing.Messages.ReconnectParams getDefaultInstanceForType() {
-        return grpc.testing.Messages.ReconnectParams.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.ReconnectParams build() {
-        grpc.testing.Messages.ReconnectParams result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.ReconnectParams buildPartial() {
-        grpc.testing.Messages.ReconnectParams result = new grpc.testing.Messages.ReconnectParams(this);
-        result.maxReconnectBackoffMs_ = maxReconnectBackoffMs_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.ReconnectParams) {
-          return mergeFrom((grpc.testing.Messages.ReconnectParams)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.ReconnectParams other) {
-        if (other == grpc.testing.Messages.ReconnectParams.getDefaultInstance()) return this;
-        if (other.getMaxReconnectBackoffMs() != 0) {
-          setMaxReconnectBackoffMs(other.getMaxReconnectBackoffMs());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.ReconnectParams parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.ReconnectParams) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private int maxReconnectBackoffMs_ ;
-      /**
-       * <code>int32 max_reconnect_backoff_ms = 1;</code>
-       */
-      public int getMaxReconnectBackoffMs() {
-        return maxReconnectBackoffMs_;
-      }
-      /**
-       * <code>int32 max_reconnect_backoff_ms = 1;</code>
-       */
-      public Builder setMaxReconnectBackoffMs(int value) {
-        
-        maxReconnectBackoffMs_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>int32 max_reconnect_backoff_ms = 1;</code>
-       */
-      public Builder clearMaxReconnectBackoffMs() {
-        
-        maxReconnectBackoffMs_ = 0;
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.ReconnectParams)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.ReconnectParams)
-    private static final grpc.testing.Messages.ReconnectParams DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.ReconnectParams();
-    }
-
-    public static grpc.testing.Messages.ReconnectParams getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<ReconnectParams>
-        PARSER = new com.google.protobuf.AbstractParser<ReconnectParams>() {
-      public ReconnectParams parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new ReconnectParams(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<ReconnectParams> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<ReconnectParams> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.ReconnectParams getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface ReconnectInfoOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.ReconnectInfo)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <code>bool passed = 1;</code>
-     */
-    boolean getPassed();
-
-    /**
-     * <code>repeated int32 backoff_ms = 2;</code>
-     */
-    java.util.List<java.lang.Integer> getBackoffMsList();
-    /**
-     * <code>repeated int32 backoff_ms = 2;</code>
-     */
-    int getBackoffMsCount();
-    /**
-     * <code>repeated int32 backoff_ms = 2;</code>
-     */
-    int getBackoffMs(int index);
-  }
-  /**
-   * <pre>
-   * For reconnect interop test only.
-   * Server tells client whether its reconnects are following the spec and the
-   * reconnect backoffs it saw.
-   * </pre>
-   *
-   * Protobuf type {@code grpc.testing.ReconnectInfo}
-   */
-  public  static final class ReconnectInfo extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.ReconnectInfo)
-      ReconnectInfoOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use ReconnectInfo.newBuilder() to construct.
-    private ReconnectInfo(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private ReconnectInfo() {
-      passed_ = false;
-      backoffMs_ = java.util.Collections.emptyList();
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private ReconnectInfo(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-
-              passed_ = input.readBool();
-              break;
-            }
-            case 16: {
-              if (!((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
-                backoffMs_ = new java.util.ArrayList<java.lang.Integer>();
-                mutable_bitField0_ |= 0x00000002;
-              }
-              backoffMs_.add(input.readInt32());
-              break;
-            }
-            case 18: {
-              int length = input.readRawVarint32();
-              int limit = input.pushLimit(length);
-              if (!((mutable_bitField0_ & 0x00000002) == 0x00000002) && input.getBytesUntilLimit() > 0) {
-                backoffMs_ = new java.util.ArrayList<java.lang.Integer>();
-                mutable_bitField0_ |= 0x00000002;
-              }
-              while (input.getBytesUntilLimit() > 0) {
-                backoffMs_.add(input.readInt32());
-              }
-              input.popLimit(limit);
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        if (((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
-          backoffMs_ = java.util.Collections.unmodifiableList(backoffMs_);
-        }
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_ReconnectInfo_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_ReconnectInfo_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.ReconnectInfo.class, grpc.testing.Messages.ReconnectInfo.Builder.class);
-    }
-
-    private int bitField0_;
-    public static final int PASSED_FIELD_NUMBER = 1;
-    private boolean passed_;
-    /**
-     * <code>bool passed = 1;</code>
-     */
-    public boolean getPassed() {
-      return passed_;
-    }
-
-    public static final int BACKOFF_MS_FIELD_NUMBER = 2;
-    private java.util.List<java.lang.Integer> backoffMs_;
-    /**
-     * <code>repeated int32 backoff_ms = 2;</code>
-     */
-    public java.util.List<java.lang.Integer>
-        getBackoffMsList() {
-      return backoffMs_;
-    }
-    /**
-     * <code>repeated int32 backoff_ms = 2;</code>
-     */
-    public int getBackoffMsCount() {
-      return backoffMs_.size();
-    }
-    /**
-     * <code>repeated int32 backoff_ms = 2;</code>
-     */
-    public int getBackoffMs(int index) {
-      return backoffMs_.get(index);
-    }
-    private int backoffMsMemoizedSerializedSize = -1;
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      getSerializedSize();
-      if (passed_ != false) {
-        output.writeBool(1, passed_);
-      }
-      if (getBackoffMsList().size() > 0) {
-        output.writeUInt32NoTag(18);
-        output.writeUInt32NoTag(backoffMsMemoizedSerializedSize);
-      }
-      for (int i = 0; i < backoffMs_.size(); i++) {
-        output.writeInt32NoTag(backoffMs_.get(i));
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (passed_ != false) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBoolSize(1, passed_);
-      }
-      {
-        int dataSize = 0;
-        for (int i = 0; i < backoffMs_.size(); i++) {
-          dataSize += com.google.protobuf.CodedOutputStream
-            .computeInt32SizeNoTag(backoffMs_.get(i));
-        }
-        size += dataSize;
-        if (!getBackoffMsList().isEmpty()) {
-          size += 1;
-          size += com.google.protobuf.CodedOutputStream
-              .computeInt32SizeNoTag(dataSize);
-        }
-        backoffMsMemoizedSerializedSize = dataSize;
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.ReconnectInfo)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.ReconnectInfo other = (grpc.testing.Messages.ReconnectInfo) obj;
-
-      boolean result = true;
-      result = result && (getPassed()
-          == other.getPassed());
-      result = result && getBackoffMsList()
-          .equals(other.getBackoffMsList());
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + PASSED_FIELD_NUMBER;
-      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
-          getPassed());
-      if (getBackoffMsCount() > 0) {
-        hash = (37 * hash) + BACKOFF_MS_FIELD_NUMBER;
-        hash = (53 * hash) + getBackoffMsList().hashCode();
-      }
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.ReconnectInfo parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.ReconnectInfo parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.ReconnectInfo prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * For reconnect interop test only.
-     * Server tells client whether its reconnects are following the spec and the
-     * reconnect backoffs it saw.
-     * </pre>
-     *
-     * Protobuf type {@code grpc.testing.ReconnectInfo}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.ReconnectInfo)
-        grpc.testing.Messages.ReconnectInfoOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_ReconnectInfo_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_ReconnectInfo_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.ReconnectInfo.class, grpc.testing.Messages.ReconnectInfo.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.ReconnectInfo.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        passed_ = false;
-
-        backoffMs_ = java.util.Collections.emptyList();
-        bitField0_ = (bitField0_ & ~0x00000002);
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_ReconnectInfo_descriptor;
-      }
-
-      public grpc.testing.Messages.ReconnectInfo getDefaultInstanceForType() {
-        return grpc.testing.Messages.ReconnectInfo.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.ReconnectInfo build() {
-        grpc.testing.Messages.ReconnectInfo result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.ReconnectInfo buildPartial() {
-        grpc.testing.Messages.ReconnectInfo result = new grpc.testing.Messages.ReconnectInfo(this);
-        int from_bitField0_ = bitField0_;
-        int to_bitField0_ = 0;
-        result.passed_ = passed_;
-        if (((bitField0_ & 0x00000002) == 0x00000002)) {
-          backoffMs_ = java.util.Collections.unmodifiableList(backoffMs_);
-          bitField0_ = (bitField0_ & ~0x00000002);
-        }
-        result.backoffMs_ = backoffMs_;
-        result.bitField0_ = to_bitField0_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.ReconnectInfo) {
-          return mergeFrom((grpc.testing.Messages.ReconnectInfo)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.ReconnectInfo other) {
-        if (other == grpc.testing.Messages.ReconnectInfo.getDefaultInstance()) return this;
-        if (other.getPassed() != false) {
-          setPassed(other.getPassed());
-        }
-        if (!other.backoffMs_.isEmpty()) {
-          if (backoffMs_.isEmpty()) {
-            backoffMs_ = other.backoffMs_;
-            bitField0_ = (bitField0_ & ~0x00000002);
-          } else {
-            ensureBackoffMsIsMutable();
-            backoffMs_.addAll(other.backoffMs_);
-          }
-          onChanged();
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.ReconnectInfo parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.ReconnectInfo) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-      private int bitField0_;
-
-      private boolean passed_ ;
-      /**
-       * <code>bool passed = 1;</code>
-       */
-      public boolean getPassed() {
-        return passed_;
-      }
-      /**
-       * <code>bool passed = 1;</code>
-       */
-      public Builder setPassed(boolean value) {
-        
-        passed_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>bool passed = 1;</code>
-       */
-      public Builder clearPassed() {
-        
-        passed_ = false;
-        onChanged();
-        return this;
-      }
-
-      private java.util.List<java.lang.Integer> backoffMs_ = java.util.Collections.emptyList();
-      private void ensureBackoffMsIsMutable() {
-        if (!((bitField0_ & 0x00000002) == 0x00000002)) {
-          backoffMs_ = new java.util.ArrayList<java.lang.Integer>(backoffMs_);
-          bitField0_ |= 0x00000002;
-         }
-      }
-      /**
-       * <code>repeated int32 backoff_ms = 2;</code>
-       */
-      public java.util.List<java.lang.Integer>
-          getBackoffMsList() {
-        return java.util.Collections.unmodifiableList(backoffMs_);
-      }
-      /**
-       * <code>repeated int32 backoff_ms = 2;</code>
-       */
-      public int getBackoffMsCount() {
-        return backoffMs_.size();
-      }
-      /**
-       * <code>repeated int32 backoff_ms = 2;</code>
-       */
-      public int getBackoffMs(int index) {
-        return backoffMs_.get(index);
-      }
-      /**
-       * <code>repeated int32 backoff_ms = 2;</code>
-       */
-      public Builder setBackoffMs(
-          int index, int value) {
-        ensureBackoffMsIsMutable();
-        backoffMs_.set(index, value);
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>repeated int32 backoff_ms = 2;</code>
-       */
-      public Builder addBackoffMs(int value) {
-        ensureBackoffMsIsMutable();
-        backoffMs_.add(value);
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>repeated int32 backoff_ms = 2;</code>
-       */
-      public Builder addAllBackoffMs(
-          java.lang.Iterable<? extends java.lang.Integer> values) {
-        ensureBackoffMsIsMutable();
-        com.google.protobuf.AbstractMessageLite.Builder.addAll(
-            values, backoffMs_);
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>repeated int32 backoff_ms = 2;</code>
-       */
-      public Builder clearBackoffMs() {
-        backoffMs_ = java.util.Collections.emptyList();
-        bitField0_ = (bitField0_ & ~0x00000002);
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.ReconnectInfo)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.ReconnectInfo)
-    private static final grpc.testing.Messages.ReconnectInfo DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.ReconnectInfo();
-    }
-
-    public static grpc.testing.Messages.ReconnectInfo getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<ReconnectInfo>
-        PARSER = new com.google.protobuf.AbstractParser<ReconnectInfo>() {
-      public ReconnectInfo parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new ReconnectInfo(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<ReconnectInfo> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<ReconnectInfo> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.ReconnectInfo getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface LoadBalancerStatsRequestOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.LoadBalancerStatsRequest)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Request stats for the next num_rpcs sent by client.
-     * </pre>
-     *
-     * <code>int32 num_rpcs = 1;</code>
-     */
-    int getNumRpcs();
-
-    /**
-     * <pre>
-     * If num_rpcs have not completed within timeout_sec, return partial results.
-     * </pre>
-     *
-     * <code>int32 timeout_sec = 2;</code>
-     */
-    int getTimeoutSec();
-  }
-  /**
-   * Protobuf type {@code grpc.testing.LoadBalancerStatsRequest}
-   */
-  public  static final class LoadBalancerStatsRequest extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.LoadBalancerStatsRequest)
-      LoadBalancerStatsRequestOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use LoadBalancerStatsRequest.newBuilder() to construct.
-    private LoadBalancerStatsRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private LoadBalancerStatsRequest() {
-      numRpcs_ = 0;
-      timeoutSec_ = 0;
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private LoadBalancerStatsRequest(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-
-              numRpcs_ = input.readInt32();
-              break;
-            }
-            case 16: {
-
-              timeoutSec_ = input.readInt32();
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsRequest_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsRequest_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.LoadBalancerStatsRequest.class, grpc.testing.Messages.LoadBalancerStatsRequest.Builder.class);
-    }
-
-    public static final int NUM_RPCS_FIELD_NUMBER = 1;
-    private int numRpcs_;
-    /**
-     * <pre>
-     * Request stats for the next num_rpcs sent by client.
-     * </pre>
-     *
-     * <code>int32 num_rpcs = 1;</code>
-     */
-    public int getNumRpcs() {
-      return numRpcs_;
-    }
-
-    public static final int TIMEOUT_SEC_FIELD_NUMBER = 2;
-    private int timeoutSec_;
-    /**
-     * <pre>
-     * If num_rpcs have not completed within timeout_sec, return partial results.
-     * </pre>
-     *
-     * <code>int32 timeout_sec = 2;</code>
-     */
-    public int getTimeoutSec() {
-      return timeoutSec_;
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (numRpcs_ != 0) {
-        output.writeInt32(1, numRpcs_);
-      }
-      if (timeoutSec_ != 0) {
-        output.writeInt32(2, timeoutSec_);
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (numRpcs_ != 0) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(1, numRpcs_);
-      }
-      if (timeoutSec_ != 0) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(2, timeoutSec_);
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.LoadBalancerStatsRequest)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.LoadBalancerStatsRequest other = (grpc.testing.Messages.LoadBalancerStatsRequest) obj;
-
-      boolean result = true;
-      result = result && (getNumRpcs()
-          == other.getNumRpcs());
-      result = result && (getTimeoutSec()
-          == other.getTimeoutSec());
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + NUM_RPCS_FIELD_NUMBER;
-      hash = (53 * hash) + getNumRpcs();
-      hash = (37 * hash) + TIMEOUT_SEC_FIELD_NUMBER;
-      hash = (53 * hash) + getTimeoutSec();
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsRequest parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.LoadBalancerStatsRequest prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * Protobuf type {@code grpc.testing.LoadBalancerStatsRequest}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.LoadBalancerStatsRequest)
-        grpc.testing.Messages.LoadBalancerStatsRequestOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsRequest_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsRequest_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.LoadBalancerStatsRequest.class, grpc.testing.Messages.LoadBalancerStatsRequest.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.LoadBalancerStatsRequest.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        numRpcs_ = 0;
-
-        timeoutSec_ = 0;
-
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsRequest_descriptor;
-      }
-
-      public grpc.testing.Messages.LoadBalancerStatsRequest getDefaultInstanceForType() {
-        return grpc.testing.Messages.LoadBalancerStatsRequest.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.LoadBalancerStatsRequest build() {
-        grpc.testing.Messages.LoadBalancerStatsRequest result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.LoadBalancerStatsRequest buildPartial() {
-        grpc.testing.Messages.LoadBalancerStatsRequest result = new grpc.testing.Messages.LoadBalancerStatsRequest(this);
-        result.numRpcs_ = numRpcs_;
-        result.timeoutSec_ = timeoutSec_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.LoadBalancerStatsRequest) {
-          return mergeFrom((grpc.testing.Messages.LoadBalancerStatsRequest)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.LoadBalancerStatsRequest other) {
-        if (other == grpc.testing.Messages.LoadBalancerStatsRequest.getDefaultInstance()) return this;
-        if (other.getNumRpcs() != 0) {
-          setNumRpcs(other.getNumRpcs());
-        }
-        if (other.getTimeoutSec() != 0) {
-          setTimeoutSec(other.getTimeoutSec());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.LoadBalancerStatsRequest parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.LoadBalancerStatsRequest) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-
-      private int numRpcs_ ;
-      /**
-       * <pre>
-       * Request stats for the next num_rpcs sent by client.
-       * </pre>
-       *
-       * <code>int32 num_rpcs = 1;</code>
-       */
-      public int getNumRpcs() {
-        return numRpcs_;
-      }
-      /**
-       * <pre>
-       * Request stats for the next num_rpcs sent by client.
-       * </pre>
-       *
-       * <code>int32 num_rpcs = 1;</code>
-       */
-      public Builder setNumRpcs(int value) {
-        
-        numRpcs_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Request stats for the next num_rpcs sent by client.
-       * </pre>
-       *
-       * <code>int32 num_rpcs = 1;</code>
-       */
-      public Builder clearNumRpcs() {
-        
-        numRpcs_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private int timeoutSec_ ;
-      /**
-       * <pre>
-       * If num_rpcs have not completed within timeout_sec, return partial results.
-       * </pre>
-       *
-       * <code>int32 timeout_sec = 2;</code>
-       */
-      public int getTimeoutSec() {
-        return timeoutSec_;
-      }
-      /**
-       * <pre>
-       * If num_rpcs have not completed within timeout_sec, return partial results.
-       * </pre>
-       *
-       * <code>int32 timeout_sec = 2;</code>
-       */
-      public Builder setTimeoutSec(int value) {
-        
-        timeoutSec_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * If num_rpcs have not completed within timeout_sec, return partial results.
-       * </pre>
-       *
-       * <code>int32 timeout_sec = 2;</code>
-       */
-      public Builder clearTimeoutSec() {
-        
-        timeoutSec_ = 0;
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.LoadBalancerStatsRequest)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.LoadBalancerStatsRequest)
-    private static final grpc.testing.Messages.LoadBalancerStatsRequest DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.LoadBalancerStatsRequest();
-    }
-
-    public static grpc.testing.Messages.LoadBalancerStatsRequest getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<LoadBalancerStatsRequest>
-        PARSER = new com.google.protobuf.AbstractParser<LoadBalancerStatsRequest>() {
-      public LoadBalancerStatsRequest parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new LoadBalancerStatsRequest(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<LoadBalancerStatsRequest> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<LoadBalancerStatsRequest> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.LoadBalancerStatsRequest getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface LoadBalancerStatsResponseOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:grpc.testing.LoadBalancerStatsResponse)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * The number of completed RPCs for each peer.
-     * </pre>
-     *
-     * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-     */
-    int getRpcsByPeerCount();
-    /**
-     * <pre>
-     * The number of completed RPCs for each peer.
-     * </pre>
-     *
-     * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-     */
-    boolean containsRpcsByPeer(
-        java.lang.String key);
-    /**
-     * Use {@link #getRpcsByPeerMap()} instead.
-     */
-    @java.lang.Deprecated
-    java.util.Map<java.lang.String, java.lang.Integer>
-    getRpcsByPeer();
-    /**
-     * <pre>
-     * The number of completed RPCs for each peer.
-     * </pre>
-     *
-     * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-     */
-    java.util.Map<java.lang.String, java.lang.Integer>
-    getRpcsByPeerMap();
-    /**
-     * <pre>
-     * The number of completed RPCs for each peer.
-     * </pre>
-     *
-     * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-     */
-
-    int getRpcsByPeerOrDefault(
-        java.lang.String key,
-        int defaultValue);
-    /**
-     * <pre>
-     * The number of completed RPCs for each peer.
-     * </pre>
-     *
-     * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-     */
-
-    int getRpcsByPeerOrThrow(
-        java.lang.String key);
-
-    /**
-     * <pre>
-     * The number of RPCs that failed to record a remote peer.
-     * </pre>
-     *
-     * <code>int32 num_failures = 2;</code>
-     */
-    int getNumFailures();
-  }
-  /**
-   * Protobuf type {@code grpc.testing.LoadBalancerStatsResponse}
-   */
-  public  static final class LoadBalancerStatsResponse extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:grpc.testing.LoadBalancerStatsResponse)
-      LoadBalancerStatsResponseOrBuilder {
-  private static final long serialVersionUID = 0L;
-    // Use LoadBalancerStatsResponse.newBuilder() to construct.
-    private LoadBalancerStatsResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private LoadBalancerStatsResponse() {
-      numFailures_ = 0;
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return this.unknownFields;
-    }
-    private LoadBalancerStatsResponse(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownFieldProto3(
-                  input, unknownFields, extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 10: {
-              if (!((mutable_bitField0_ & 0x00000001) == 0x00000001)) {
-                rpcsByPeer_ = com.google.protobuf.MapField.newMapField(
-                    RpcsByPeerDefaultEntryHolder.defaultEntry);
-                mutable_bitField0_ |= 0x00000001;
-              }
-              com.google.protobuf.MapEntry<java.lang.String, java.lang.Integer>
-              rpcsByPeer__ = input.readMessage(
-                  RpcsByPeerDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
-              rpcsByPeer_.getMutableMap().put(
-                  rpcsByPeer__.getKey(), rpcsByPeer__.getValue());
-              break;
-            }
-            case 16: {
-
-              numFailures_ = input.readInt32();
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsResponse_descriptor;
-    }
-
-    @SuppressWarnings({"rawtypes"})
-    protected com.google.protobuf.MapField internalGetMapField(
-        int number) {
-      switch (number) {
-        case 1:
-          return internalGetRpcsByPeer();
-        default:
-          throw new RuntimeException(
-              "Invalid map field number: " + number);
-      }
-    }
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsResponse_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              grpc.testing.Messages.LoadBalancerStatsResponse.class, grpc.testing.Messages.LoadBalancerStatsResponse.Builder.class);
-    }
-
-    private int bitField0_;
-    public static final int RPCS_BY_PEER_FIELD_NUMBER = 1;
-    private static final class RpcsByPeerDefaultEntryHolder {
-      static final com.google.protobuf.MapEntry<
-          java.lang.String, java.lang.Integer> defaultEntry =
-              com.google.protobuf.MapEntry
-              .<java.lang.String, java.lang.Integer>newDefaultInstance(
-                  grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsResponse_RpcsByPeerEntry_descriptor, 
-                  com.google.protobuf.WireFormat.FieldType.STRING,
-                  "",
-                  com.google.protobuf.WireFormat.FieldType.INT32,
-                  0);
-    }
-    private com.google.protobuf.MapField<
-        java.lang.String, java.lang.Integer> rpcsByPeer_;
-    private com.google.protobuf.MapField<java.lang.String, java.lang.Integer>
-    internalGetRpcsByPeer() {
-      if (rpcsByPeer_ == null) {
-        return com.google.protobuf.MapField.emptyMapField(
-            RpcsByPeerDefaultEntryHolder.defaultEntry);
-      }
-      return rpcsByPeer_;
-    }
-
-    public int getRpcsByPeerCount() {
-      return internalGetRpcsByPeer().getMap().size();
-    }
-    /**
-     * <pre>
-     * The number of completed RPCs for each peer.
-     * </pre>
-     *
-     * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-     */
-
-    public boolean containsRpcsByPeer(
-        java.lang.String key) {
-      if (key == null) { throw new java.lang.NullPointerException(); }
-      return internalGetRpcsByPeer().getMap().containsKey(key);
-    }
-    /**
-     * Use {@link #getRpcsByPeerMap()} instead.
-     */
-    @java.lang.Deprecated
-    public java.util.Map<java.lang.String, java.lang.Integer> getRpcsByPeer() {
-      return getRpcsByPeerMap();
-    }
-    /**
-     * <pre>
-     * The number of completed RPCs for each peer.
-     * </pre>
-     *
-     * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-     */
-
-    public java.util.Map<java.lang.String, java.lang.Integer> getRpcsByPeerMap() {
-      return internalGetRpcsByPeer().getMap();
-    }
-    /**
-     * <pre>
-     * The number of completed RPCs for each peer.
-     * </pre>
-     *
-     * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-     */
-
-    public int getRpcsByPeerOrDefault(
-        java.lang.String key,
-        int defaultValue) {
-      if (key == null) { throw new java.lang.NullPointerException(); }
-      java.util.Map<java.lang.String, java.lang.Integer> map =
-          internalGetRpcsByPeer().getMap();
-      return map.containsKey(key) ? map.get(key) : defaultValue;
-    }
-    /**
-     * <pre>
-     * The number of completed RPCs for each peer.
-     * </pre>
-     *
-     * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-     */
-
-    public int getRpcsByPeerOrThrow(
-        java.lang.String key) {
-      if (key == null) { throw new java.lang.NullPointerException(); }
-      java.util.Map<java.lang.String, java.lang.Integer> map =
-          internalGetRpcsByPeer().getMap();
-      if (!map.containsKey(key)) {
-        throw new java.lang.IllegalArgumentException();
-      }
-      return map.get(key);
-    }
-
-    public static final int NUM_FAILURES_FIELD_NUMBER = 2;
-    private int numFailures_;
-    /**
-     * <pre>
-     * The number of RPCs that failed to record a remote peer.
-     * </pre>
-     *
-     * <code>int32 num_failures = 2;</code>
-     */
-    public int getNumFailures() {
-      return numFailures_;
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      com.google.protobuf.GeneratedMessageV3
-        .serializeStringMapTo(
-          output,
-          internalGetRpcsByPeer(),
-          RpcsByPeerDefaultEntryHolder.defaultEntry,
-          1);
-      if (numFailures_ != 0) {
-        output.writeInt32(2, numFailures_);
-      }
-      unknownFields.writeTo(output);
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      for (java.util.Map.Entry<java.lang.String, java.lang.Integer> entry
-           : internalGetRpcsByPeer().getMap().entrySet()) {
-        com.google.protobuf.MapEntry<java.lang.String, java.lang.Integer>
-        rpcsByPeer__ = RpcsByPeerDefaultEntryHolder.defaultEntry.newBuilderForType()
-            .setKey(entry.getKey())
-            .setValue(entry.getValue())
-            .build();
-        size += com.google.protobuf.CodedOutputStream
-            .computeMessageSize(1, rpcsByPeer__);
-      }
-      if (numFailures_ != 0) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(2, numFailures_);
-      }
-      size += unknownFields.getSerializedSize();
-      memoizedSize = size;
-      return size;
-    }
-
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof grpc.testing.Messages.LoadBalancerStatsResponse)) {
-        return super.equals(obj);
-      }
-      grpc.testing.Messages.LoadBalancerStatsResponse other = (grpc.testing.Messages.LoadBalancerStatsResponse) obj;
-
-      boolean result = true;
-      result = result && internalGetRpcsByPeer().equals(
-          other.internalGetRpcsByPeer());
-      result = result && (getNumFailures()
-          == other.getNumFailures());
-      result = result && unknownFields.equals(other.unknownFields);
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      if (!internalGetRpcsByPeer().getMap().isEmpty()) {
-        hash = (37 * hash) + RPCS_BY_PEER_FIELD_NUMBER;
-        hash = (53 * hash) + internalGetRpcsByPeer().hashCode();
-      }
-      hash = (37 * hash) + NUM_FAILURES_FIELD_NUMBER;
-      hash = (53 * hash) + getNumFailures();
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseFrom(
-        java.nio.ByteBuffer data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseFrom(
-        java.nio.ByteBuffer data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static grpc.testing.Messages.LoadBalancerStatsResponse parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(grpc.testing.Messages.LoadBalancerStatsResponse prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * Protobuf type {@code grpc.testing.LoadBalancerStatsResponse}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:grpc.testing.LoadBalancerStatsResponse)
-        grpc.testing.Messages.LoadBalancerStatsResponseOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsResponse_descriptor;
-      }
-
-      @SuppressWarnings({"rawtypes"})
-      protected com.google.protobuf.MapField internalGetMapField(
-          int number) {
-        switch (number) {
-          case 1:
-            return internalGetRpcsByPeer();
-          default:
-            throw new RuntimeException(
-                "Invalid map field number: " + number);
-        }
-      }
-      @SuppressWarnings({"rawtypes"})
-      protected com.google.protobuf.MapField internalGetMutableMapField(
-          int number) {
-        switch (number) {
-          case 1:
-            return internalGetMutableRpcsByPeer();
-          default:
-            throw new RuntimeException(
-                "Invalid map field number: " + number);
-        }
-      }
-      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsResponse_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                grpc.testing.Messages.LoadBalancerStatsResponse.class, grpc.testing.Messages.LoadBalancerStatsResponse.Builder.class);
-      }
-
-      // Construct using grpc.testing.Messages.LoadBalancerStatsResponse.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessageV3
-                .alwaysUseFieldBuilders) {
-        }
-      }
-      public Builder clear() {
-        super.clear();
-        internalGetMutableRpcsByPeer().clear();
-        numFailures_ = 0;
-
-        return this;
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return grpc.testing.Messages.internal_static_grpc_testing_LoadBalancerStatsResponse_descriptor;
-      }
-
-      public grpc.testing.Messages.LoadBalancerStatsResponse getDefaultInstanceForType() {
-        return grpc.testing.Messages.LoadBalancerStatsResponse.getDefaultInstance();
-      }
-
-      public grpc.testing.Messages.LoadBalancerStatsResponse build() {
-        grpc.testing.Messages.LoadBalancerStatsResponse result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public grpc.testing.Messages.LoadBalancerStatsResponse buildPartial() {
-        grpc.testing.Messages.LoadBalancerStatsResponse result = new grpc.testing.Messages.LoadBalancerStatsResponse(this);
-        int from_bitField0_ = bitField0_;
-        int to_bitField0_ = 0;
-        result.rpcsByPeer_ = internalGetRpcsByPeer();
-        result.rpcsByPeer_.makeImmutable();
-        result.numFailures_ = numFailures_;
-        result.bitField0_ = to_bitField0_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, java.lang.Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          java.lang.Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof grpc.testing.Messages.LoadBalancerStatsResponse) {
-          return mergeFrom((grpc.testing.Messages.LoadBalancerStatsResponse)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(grpc.testing.Messages.LoadBalancerStatsResponse other) {
-        if (other == grpc.testing.Messages.LoadBalancerStatsResponse.getDefaultInstance()) return this;
-        internalGetMutableRpcsByPeer().mergeFrom(
-            other.internalGetRpcsByPeer());
-        if (other.getNumFailures() != 0) {
-          setNumFailures(other.getNumFailures());
-        }
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        grpc.testing.Messages.LoadBalancerStatsResponse parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (grpc.testing.Messages.LoadBalancerStatsResponse) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-      private int bitField0_;
-
-      private com.google.protobuf.MapField<
-          java.lang.String, java.lang.Integer> rpcsByPeer_;
-      private com.google.protobuf.MapField<java.lang.String, java.lang.Integer>
-      internalGetRpcsByPeer() {
-        if (rpcsByPeer_ == null) {
-          return com.google.protobuf.MapField.emptyMapField(
-              RpcsByPeerDefaultEntryHolder.defaultEntry);
-        }
-        return rpcsByPeer_;
-      }
-      private com.google.protobuf.MapField<java.lang.String, java.lang.Integer>
-      internalGetMutableRpcsByPeer() {
-        onChanged();;
-        if (rpcsByPeer_ == null) {
-          rpcsByPeer_ = com.google.protobuf.MapField.newMapField(
-              RpcsByPeerDefaultEntryHolder.defaultEntry);
-        }
-        if (!rpcsByPeer_.isMutable()) {
-          rpcsByPeer_ = rpcsByPeer_.copy();
-        }
-        return rpcsByPeer_;
-      }
-
-      public int getRpcsByPeerCount() {
-        return internalGetRpcsByPeer().getMap().size();
-      }
-      /**
-       * <pre>
-       * The number of completed RPCs for each peer.
-       * </pre>
-       *
-       * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-       */
-
-      public boolean containsRpcsByPeer(
-          java.lang.String key) {
-        if (key == null) { throw new java.lang.NullPointerException(); }
-        return internalGetRpcsByPeer().getMap().containsKey(key);
-      }
-      /**
-       * Use {@link #getRpcsByPeerMap()} instead.
-       */
-      @java.lang.Deprecated
-      public java.util.Map<java.lang.String, java.lang.Integer> getRpcsByPeer() {
-        return getRpcsByPeerMap();
-      }
-      /**
-       * <pre>
-       * The number of completed RPCs for each peer.
-       * </pre>
-       *
-       * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-       */
-
-      public java.util.Map<java.lang.String, java.lang.Integer> getRpcsByPeerMap() {
-        return internalGetRpcsByPeer().getMap();
-      }
-      /**
-       * <pre>
-       * The number of completed RPCs for each peer.
-       * </pre>
-       *
-       * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-       */
-
-      public int getRpcsByPeerOrDefault(
-          java.lang.String key,
-          int defaultValue) {
-        if (key == null) { throw new java.lang.NullPointerException(); }
-        java.util.Map<java.lang.String, java.lang.Integer> map =
-            internalGetRpcsByPeer().getMap();
-        return map.containsKey(key) ? map.get(key) : defaultValue;
-      }
-      /**
-       * <pre>
-       * The number of completed RPCs for each peer.
-       * </pre>
-       *
-       * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-       */
-
-      public int getRpcsByPeerOrThrow(
-          java.lang.String key) {
-        if (key == null) { throw new java.lang.NullPointerException(); }
-        java.util.Map<java.lang.String, java.lang.Integer> map =
-            internalGetRpcsByPeer().getMap();
-        if (!map.containsKey(key)) {
-          throw new java.lang.IllegalArgumentException();
-        }
-        return map.get(key);
-      }
-
-      public Builder clearRpcsByPeer() {
-        internalGetMutableRpcsByPeer().getMutableMap()
-            .clear();
-        return this;
-      }
-      /**
-       * <pre>
-       * The number of completed RPCs for each peer.
-       * </pre>
-       *
-       * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-       */
-
-      public Builder removeRpcsByPeer(
-          java.lang.String key) {
-        if (key == null) { throw new java.lang.NullPointerException(); }
-        internalGetMutableRpcsByPeer().getMutableMap()
-            .remove(key);
-        return this;
-      }
-      /**
-       * Use alternate mutation accessors instead.
-       */
-      @java.lang.Deprecated
-      public java.util.Map<java.lang.String, java.lang.Integer>
-      getMutableRpcsByPeer() {
-        return internalGetMutableRpcsByPeer().getMutableMap();
-      }
-      /**
-       * <pre>
-       * The number of completed RPCs for each peer.
-       * </pre>
-       *
-       * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-       */
-      public Builder putRpcsByPeer(
-          java.lang.String key,
-          int value) {
-        if (key == null) { throw new java.lang.NullPointerException(); }
-        
-        internalGetMutableRpcsByPeer().getMutableMap()
-            .put(key, value);
-        return this;
-      }
-      /**
-       * <pre>
-       * The number of completed RPCs for each peer.
-       * </pre>
-       *
-       * <code>map&lt;string, int32&gt; rpcs_by_peer = 1;</code>
-       */
-
-      public Builder putAllRpcsByPeer(
-          java.util.Map<java.lang.String, java.lang.Integer> values) {
-        internalGetMutableRpcsByPeer().getMutableMap()
-            .putAll(values);
-        return this;
-      }
-
-      private int numFailures_ ;
-      /**
-       * <pre>
-       * The number of RPCs that failed to record a remote peer.
-       * </pre>
-       *
-       * <code>int32 num_failures = 2;</code>
-       */
-      public int getNumFailures() {
-        return numFailures_;
-      }
-      /**
-       * <pre>
-       * The number of RPCs that failed to record a remote peer.
-       * </pre>
-       *
-       * <code>int32 num_failures = 2;</code>
-       */
-      public Builder setNumFailures(int value) {
-        
-        numFailures_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * The number of RPCs that failed to record a remote peer.
-       * </pre>
-       *
-       * <code>int32 num_failures = 2;</code>
-       */
-      public Builder clearNumFailures() {
-        
-        numFailures_ = 0;
-        onChanged();
-        return this;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.setUnknownFieldsProto3(unknownFields);
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return super.mergeUnknownFields(unknownFields);
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:grpc.testing.LoadBalancerStatsResponse)
-    }
-
-    // @@protoc_insertion_point(class_scope:grpc.testing.LoadBalancerStatsResponse)
-    private static final grpc.testing.Messages.LoadBalancerStatsResponse DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new grpc.testing.Messages.LoadBalancerStatsResponse();
-    }
-
-    public static grpc.testing.Messages.LoadBalancerStatsResponse getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<LoadBalancerStatsResponse>
-        PARSER = new com.google.protobuf.AbstractParser<LoadBalancerStatsResponse>() {
-      public LoadBalancerStatsResponse parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new LoadBalancerStatsResponse(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<LoadBalancerStatsResponse> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<LoadBalancerStatsResponse> getParserForType() {
-      return PARSER;
-    }
-
-    public grpc.testing.Messages.LoadBalancerStatsResponse getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_BoolValue_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_BoolValue_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_Payload_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_Payload_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_EchoStatus_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_EchoStatus_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_SimpleRequest_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_SimpleRequest_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_SimpleResponse_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_SimpleResponse_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_StreamingInputCallRequest_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_StreamingInputCallRequest_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_StreamingInputCallResponse_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_StreamingInputCallResponse_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_ResponseParameters_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_ResponseParameters_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_StreamingOutputCallRequest_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_StreamingOutputCallRequest_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_StreamingOutputCallResponse_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_StreamingOutputCallResponse_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_ReconnectParams_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_ReconnectParams_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_ReconnectInfo_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_ReconnectInfo_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_LoadBalancerStatsRequest_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_LoadBalancerStatsRequest_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_LoadBalancerStatsResponse_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_LoadBalancerStatsResponse_fieldAccessorTable;
-  private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_grpc_testing_LoadBalancerStatsResponse_RpcsByPeerEntry_descriptor;
-  private static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_grpc_testing_LoadBalancerStatsResponse_RpcsByPeerEntry_fieldAccessorTable;
-
-  public static com.google.protobuf.Descriptors.FileDescriptor
-      getDescriptor() {
-    return descriptor;
-  }
-  private static  com.google.protobuf.Descriptors.FileDescriptor
-      descriptor;
-  static {
-    java.lang.String[] descriptorData = {
-      "\n\033grpc/testing/messages.proto\022\014grpc.test" +
-      "ing\"\032\n\tBoolValue\022\r\n\005value\030\001 \001(\010\"@\n\007Paylo" +
-      "ad\022\'\n\004type\030\001 \001(\0162\031.grpc.testing.PayloadT" +
-      "ype\022\014\n\004body\030\002 \001(\014\"+\n\nEchoStatus\022\014\n\004code\030" +
-      "\001 \001(\005\022\017\n\007message\030\002 \001(\t\"\206\003\n\rSimpleRequest" +
-      "\0220\n\rresponse_type\030\001 \001(\0162\031.grpc.testing.P" +
-      "ayloadType\022\025\n\rresponse_size\030\002 \001(\005\022&\n\007pay" +
-      "load\030\003 \001(\0132\025.grpc.testing.Payload\022\025\n\rfil" +
-      "l_username\030\004 \001(\010\022\030\n\020fill_oauth_scope\030\005 \001" +
-      "(\010\0224\n\023response_compressed\030\006 \001(\0132\027.grpc.t",
-      "esting.BoolValue\0221\n\017response_status\030\007 \001(" +
-      "\0132\030.grpc.testing.EchoStatus\0222\n\021expect_co" +
-      "mpressed\030\010 \001(\0132\027.grpc.testing.BoolValue\022" +
-      "\026\n\016fill_server_id\030\t \001(\010\022\036\n\026fill_grpclb_r" +
-      "oute_type\030\n \001(\010\"\276\001\n\016SimpleResponse\022&\n\007pa" +
-      "yload\030\001 \001(\0132\025.grpc.testing.Payload\022\020\n\010us" +
-      "ername\030\002 \001(\t\022\023\n\013oauth_scope\030\003 \001(\t\022\021\n\tser" +
-      "ver_id\030\004 \001(\t\0228\n\021grpclb_route_type\030\005 \001(\0162" +
-      "\035.grpc.testing.GrpclbRouteType\022\020\n\010hostna" +
-      "me\030\006 \001(\t\"w\n\031StreamingInputCallRequest\022&\n",
-      "\007payload\030\001 \001(\0132\025.grpc.testing.Payload\0222\n" +
-      "\021expect_compressed\030\002 \001(\0132\027.grpc.testing." +
-      "BoolValue\"=\n\032StreamingInputCallResponse\022" +
-      "\037\n\027aggregated_payload_size\030\001 \001(\005\"d\n\022Resp" +
-      "onseParameters\022\014\n\004size\030\001 \001(\005\022\023\n\013interval" +
-      "_us\030\002 \001(\005\022+\n\ncompressed\030\003 \001(\0132\027.grpc.tes" +
-      "ting.BoolValue\"\350\001\n\032StreamingOutputCallRe" +
-      "quest\0220\n\rresponse_type\030\001 \001(\0162\031.grpc.test" +
-      "ing.PayloadType\022=\n\023response_parameters\030\002" +
-      " \003(\0132 .grpc.testing.ResponseParameters\022&",
-      "\n\007payload\030\003 \001(\0132\025.grpc.testing.Payload\0221" +
-      "\n\017response_status\030\007 \001(\0132\030.grpc.testing.E" +
-      "choStatus\"E\n\033StreamingOutputCallResponse" +
-      "\022&\n\007payload\030\001 \001(\0132\025.grpc.testing.Payload" +
-      "\"3\n\017ReconnectParams\022 \n\030max_reconnect_bac" +
-      "koff_ms\030\001 \001(\005\"3\n\rReconnectInfo\022\016\n\006passed" +
-      "\030\001 \001(\010\022\022\n\nbackoff_ms\030\002 \003(\005\"A\n\030LoadBalanc" +
-      "erStatsRequest\022\020\n\010num_rpcs\030\001 \001(\005\022\023\n\013time" +
-      "out_sec\030\002 \001(\005\"\263\001\n\031LoadBalancerStatsRespo" +
-      "nse\022M\n\014rpcs_by_peer\030\001 \003(\01327.grpc.testing",
-      ".LoadBalancerStatsResponse.RpcsByPeerEnt" +
-      "ry\022\024\n\014num_failures\030\002 \001(\005\0321\n\017RpcsByPeerEn" +
-      "try\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\005:\0028\001*\037\n\013P" +
-      "ayloadType\022\020\n\014COMPRESSABLE\020\000*o\n\017GrpclbRo" +
-      "uteType\022\035\n\031GRPCLB_ROUTE_TYPE_UNKNOWN\020\000\022\036" +
-      "\n\032GRPCLB_ROUTE_TYPE_FALLBACK\020\001\022\035\n\031GRPCLB" +
-      "_ROUTE_TYPE_BACKEND\020\002b\006proto3"
-    };
-    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
-        new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
-          public com.google.protobuf.ExtensionRegistry assignDescriptors(
-              com.google.protobuf.Descriptors.FileDescriptor root) {
-            descriptor = root;
-            return null;
-          }
-        };
-    com.google.protobuf.Descriptors.FileDescriptor
-      .internalBuildGeneratedFileFrom(descriptorData,
-        new com.google.protobuf.Descriptors.FileDescriptor[] {
-        }, assigner);
-    internal_static_grpc_testing_BoolValue_descriptor =
-      getDescriptor().getMessageTypes().get(0);
-    internal_static_grpc_testing_BoolValue_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_BoolValue_descriptor,
-        new java.lang.String[] { "Value", });
-    internal_static_grpc_testing_Payload_descriptor =
-      getDescriptor().getMessageTypes().get(1);
-    internal_static_grpc_testing_Payload_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_Payload_descriptor,
-        new java.lang.String[] { "Type", "Body", });
-    internal_static_grpc_testing_EchoStatus_descriptor =
-      getDescriptor().getMessageTypes().get(2);
-    internal_static_grpc_testing_EchoStatus_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_EchoStatus_descriptor,
-        new java.lang.String[] { "Code", "Message", });
-    internal_static_grpc_testing_SimpleRequest_descriptor =
-      getDescriptor().getMessageTypes().get(3);
-    internal_static_grpc_testing_SimpleRequest_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_SimpleRequest_descriptor,
-        new java.lang.String[] { "ResponseType", "ResponseSize", "Payload", "FillUsername", "FillOauthScope", "ResponseCompressed", "ResponseStatus", "ExpectCompressed", "FillServerId", "FillGrpclbRouteType", });
-    internal_static_grpc_testing_SimpleResponse_descriptor =
-      getDescriptor().getMessageTypes().get(4);
-    internal_static_grpc_testing_SimpleResponse_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_SimpleResponse_descriptor,
-        new java.lang.String[] { "Payload", "Username", "OauthScope", "ServerId", "GrpclbRouteType", "Hostname", });
-    internal_static_grpc_testing_StreamingInputCallRequest_descriptor =
-      getDescriptor().getMessageTypes().get(5);
-    internal_static_grpc_testing_StreamingInputCallRequest_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_StreamingInputCallRequest_descriptor,
-        new java.lang.String[] { "Payload", "ExpectCompressed", });
-    internal_static_grpc_testing_StreamingInputCallResponse_descriptor =
-      getDescriptor().getMessageTypes().get(6);
-    internal_static_grpc_testing_StreamingInputCallResponse_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_StreamingInputCallResponse_descriptor,
-        new java.lang.String[] { "AggregatedPayloadSize", });
-    internal_static_grpc_testing_ResponseParameters_descriptor =
-      getDescriptor().getMessageTypes().get(7);
-    internal_static_grpc_testing_ResponseParameters_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_ResponseParameters_descriptor,
-        new java.lang.String[] { "Size", "IntervalUs", "Compressed", });
-    internal_static_grpc_testing_StreamingOutputCallRequest_descriptor =
-      getDescriptor().getMessageTypes().get(8);
-    internal_static_grpc_testing_StreamingOutputCallRequest_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_StreamingOutputCallRequest_descriptor,
-        new java.lang.String[] { "ResponseType", "ResponseParameters", "Payload", "ResponseStatus", });
-    internal_static_grpc_testing_StreamingOutputCallResponse_descriptor =
-      getDescriptor().getMessageTypes().get(9);
-    internal_static_grpc_testing_StreamingOutputCallResponse_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_StreamingOutputCallResponse_descriptor,
-        new java.lang.String[] { "Payload", });
-    internal_static_grpc_testing_ReconnectParams_descriptor =
-      getDescriptor().getMessageTypes().get(10);
-    internal_static_grpc_testing_ReconnectParams_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_ReconnectParams_descriptor,
-        new java.lang.String[] { "MaxReconnectBackoffMs", });
-    internal_static_grpc_testing_ReconnectInfo_descriptor =
-      getDescriptor().getMessageTypes().get(11);
-    internal_static_grpc_testing_ReconnectInfo_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_ReconnectInfo_descriptor,
-        new java.lang.String[] { "Passed", "BackoffMs", });
-    internal_static_grpc_testing_LoadBalancerStatsRequest_descriptor =
-      getDescriptor().getMessageTypes().get(12);
-    internal_static_grpc_testing_LoadBalancerStatsRequest_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_LoadBalancerStatsRequest_descriptor,
-        new java.lang.String[] { "NumRpcs", "TimeoutSec", });
-    internal_static_grpc_testing_LoadBalancerStatsResponse_descriptor =
-      getDescriptor().getMessageTypes().get(13);
-    internal_static_grpc_testing_LoadBalancerStatsResponse_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_LoadBalancerStatsResponse_descriptor,
-        new java.lang.String[] { "RpcsByPeer", "NumFailures", });
-    internal_static_grpc_testing_LoadBalancerStatsResponse_RpcsByPeerEntry_descriptor =
-      internal_static_grpc_testing_LoadBalancerStatsResponse_descriptor.getNestedTypes().get(0);
-    internal_static_grpc_testing_LoadBalancerStatsResponse_RpcsByPeerEntry_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_grpc_testing_LoadBalancerStatsResponse_RpcsByPeerEntry_descriptor,
-        new java.lang.String[] { "Key", "Value", });
-  }
-
-  // @@protoc_insertion_point(outer_class_scope)
-}
diff --git a/src/connector/src/main/java/grpc/testing/TestFromProto.java b/src/connector/src/main/java/grpc/testing/TestFromProto.java
deleted file mode 100644
index d9d026f0..00000000
--- a/src/connector/src/main/java/grpc/testing/TestFromProto.java
+++ /dev/null
@@ -1,81 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: grpc/testing/test.proto
-
-package grpc.testing;
-
-/**
- *  ******* DO NOT EDIT *******
- * Generated by proto compiler from protos in the following dir
- *     https://github.com/grpc/grpc/tree/master/src/proto/grpc/testing
- */
-public final class TestFromProto {
-  private TestFromProto() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistryLite registry) {
-  }
-
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistry registry) {
-    registerAllExtensions(
-        (com.google.protobuf.ExtensionRegistryLite) registry);
-  }
-
-  public static com.google.protobuf.Descriptors.FileDescriptor
-      getDescriptor() {
-    return descriptor;
-  }
-  private static  com.google.protobuf.Descriptors.FileDescriptor
-      descriptor;
-  static {
-    java.lang.String[] descriptorData = {
-      "\n\027grpc/testing/test.proto\022\014grpc.testing\032" +
-      "\030grpc/testing/empty.proto\032\033grpc/testing/" +
-      "messages.proto2\313\005\n\013TestService\0225\n\tEmptyC" +
-      "all\022\023.grpc.testing.Empty\032\023.grpc.testing." +
-      "Empty\022F\n\tUnaryCall\022\033.grpc.testing.Simple" +
-      "Request\032\034.grpc.testing.SimpleResponse\022O\n" +
-      "\022CacheableUnaryCall\022\033.grpc.testing.Simpl" +
-      "eRequest\032\034.grpc.testing.SimpleResponse\022l" +
-      "\n\023StreamingOutputCall\022(.grpc.testing.Str" +
-      "eamingOutputCallRequest\032).grpc.testing.S",
-      "treamingOutputCallResponse0\001\022i\n\022Streamin" +
-      "gInputCall\022\'.grpc.testing.StreamingInput" +
-      "CallRequest\032(.grpc.testing.StreamingInpu" +
-      "tCallResponse(\001\022i\n\016FullDuplexCall\022(.grpc" +
-      ".testing.StreamingOutputCallRequest\032).gr" +
-      "pc.testing.StreamingOutputCallResponse(\001" +
-      "0\001\022i\n\016HalfDuplexCall\022(.grpc.testing.Stre" +
-      "amingOutputCallRequest\032).grpc.testing.St" +
-      "reamingOutputCallResponse(\0010\001\022=\n\021Unimple" +
-      "mentedCall\022\023.grpc.testing.Empty\032\023.grpc.t",
-      "esting.Empty2U\n\024UnimplementedService\022=\n\021" +
-      "UnimplementedCall\022\023.grpc.testing.Empty\032\023" +
-      ".grpc.testing.Empty2\211\001\n\020ReconnectService" +
-      "\022;\n\005Start\022\035.grpc.testing.ReconnectParams" +
-      "\032\023.grpc.testing.Empty\0228\n\004Stop\022\023.grpc.tes" +
-      "ting.Empty\032\033.grpc.testing.ReconnectInfo2" +
-      "\177\n\030LoadBalancerStatsService\022c\n\016GetClient" +
-      "Stats\022&.grpc.testing.LoadBalancerStatsRe" +
-      "quest\032\'.grpc.testing.LoadBalancerStatsRe" +
-      "sponse\"\000b\006proto3"
-    };
-    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
-        new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
-          public com.google.protobuf.ExtensionRegistry assignDescriptors(
-              com.google.protobuf.Descriptors.FileDescriptor root) {
-            descriptor = root;
-            return null;
-          }
-        };
-    com.google.protobuf.Descriptors.FileDescriptor
-      .internalBuildGeneratedFileFrom(descriptorData,
-        new com.google.protobuf.Descriptors.FileDescriptor[] {
-          grpc.testing.EmptyOuterClass.getDescriptor(),
-          grpc.testing.Messages.getDescriptor(),
-        }, assigner);
-    grpc.testing.EmptyOuterClass.getDescriptor();
-    grpc.testing.Messages.getDescriptor();
-  }
-
-  // @@protoc_insertion_point(outer_class_scope)
-}
diff --git a/src/connector/src/main/java/grpc/testing/TestServiceGrpc.java b/src/connector/src/main/java/grpc/testing/TestServiceGrpc.java
deleted file mode 100644
index c56a9074..00000000
--- a/src/connector/src/main/java/grpc/testing/TestServiceGrpc.java
+++ /dev/null
@@ -1,730 +0,0 @@
-package grpc.testing;
-
-import static io.grpc.stub.ClientCalls.asyncUnaryCall;
-import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ClientCalls.blockingUnaryCall;
-import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
-import static io.grpc.stub.ClientCalls.futureUnaryCall;
-import static io.grpc.MethodDescriptor.generateFullMethodName;
-import static io.grpc.stub.ServerCalls.asyncUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
-
-import grpc.testing.Messages.SimpleRequest;
-import grpc.testing.Messages.SimpleResponse;
-import io.grpc.stub.StreamObserver;
-
-/**
- *  ******* DO NOT EDIT *******
- * Generated by proto compiler from protos in the following dir
- *      https://github.com/grpc/grpc/tree/master/src/proto/grpc/testing
- *
- *
- * <pre>
- * A simple service to test the various types of RPCs and experiment with
- * performance with various types of payload.
- * </pre>
- */
-@javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.7.0)",
-    comments = "Source: grpc/testing/test.proto")
-public final class TestServiceGrpc {
-
-  private TestServiceGrpc() {}
-
-  public static final String SERVICE_NAME = "grpc.testing.TestService";
-
-  // Static method descriptors that strictly reflect the proto.
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<grpc.testing.EmptyOuterClass.Empty,
-      grpc.testing.EmptyOuterClass.Empty> METHOD_EMPTY_CALL =
-      io.grpc.MethodDescriptor.<grpc.testing.EmptyOuterClass.Empty, grpc.testing.EmptyOuterClass.Empty>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "EmptyCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.EmptyOuterClass.Empty.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.EmptyOuterClass.Empty.getDefaultInstance()))
-          .setSchemaDescriptor(new TestServiceMethodDescriptorSupplier("EmptyCall"))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<grpc.testing.Messages.SimpleRequest,
-      grpc.testing.Messages.SimpleResponse> METHOD_UNARY_CALL =
-      io.grpc.MethodDescriptor.<grpc.testing.Messages.SimpleRequest, grpc.testing.Messages.SimpleResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "UnaryCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.SimpleRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.SimpleResponse.getDefaultInstance()))
-          .setSchemaDescriptor(new TestServiceMethodDescriptorSupplier("UnaryCall"))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<grpc.testing.Messages.SimpleRequest,
-      grpc.testing.Messages.SimpleResponse> METHOD_CACHEABLE_UNARY_CALL =
-      io.grpc.MethodDescriptor.<grpc.testing.Messages.SimpleRequest, grpc.testing.Messages.SimpleResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "CacheableUnaryCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.SimpleRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.SimpleResponse.getDefaultInstance()))
-          .setSchemaDescriptor(new TestServiceMethodDescriptorSupplier("CacheableUnaryCall"))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<grpc.testing.Messages.StreamingOutputCallRequest,
-      grpc.testing.Messages.StreamingOutputCallResponse> METHOD_STREAMING_OUTPUT_CALL =
-      io.grpc.MethodDescriptor.<grpc.testing.Messages.StreamingOutputCallRequest, grpc.testing.Messages.StreamingOutputCallResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.SERVER_STREAMING)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "StreamingOutputCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.StreamingOutputCallRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.StreamingOutputCallResponse.getDefaultInstance()))
-          .setSchemaDescriptor(new TestServiceMethodDescriptorSupplier("StreamingOutputCall"))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<grpc.testing.Messages.StreamingInputCallRequest,
-      grpc.testing.Messages.StreamingInputCallResponse> METHOD_STREAMING_INPUT_CALL =
-      io.grpc.MethodDescriptor.<grpc.testing.Messages.StreamingInputCallRequest, grpc.testing.Messages.StreamingInputCallResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.CLIENT_STREAMING)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "StreamingInputCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.StreamingInputCallRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.StreamingInputCallResponse.getDefaultInstance()))
-          .setSchemaDescriptor(new TestServiceMethodDescriptorSupplier("StreamingInputCall"))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<grpc.testing.Messages.StreamingOutputCallRequest,
-      grpc.testing.Messages.StreamingOutputCallResponse> METHOD_FULL_DUPLEX_CALL =
-      io.grpc.MethodDescriptor.<grpc.testing.Messages.StreamingOutputCallRequest, grpc.testing.Messages.StreamingOutputCallResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.BIDI_STREAMING)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "FullDuplexCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.StreamingOutputCallRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.StreamingOutputCallResponse.getDefaultInstance()))
-          .setSchemaDescriptor(new TestServiceMethodDescriptorSupplier("FullDuplexCall"))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<grpc.testing.Messages.StreamingOutputCallRequest,
-      grpc.testing.Messages.StreamingOutputCallResponse> METHOD_HALF_DUPLEX_CALL =
-      io.grpc.MethodDescriptor.<grpc.testing.Messages.StreamingOutputCallRequest, grpc.testing.Messages.StreamingOutputCallResponse>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.BIDI_STREAMING)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "HalfDuplexCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.StreamingOutputCallRequest.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.Messages.StreamingOutputCallResponse.getDefaultInstance()))
-          .setSchemaDescriptor(new TestServiceMethodDescriptorSupplier("HalfDuplexCall"))
-          .build();
-  @io.grpc.ExperimentalApi("https://github.com/grpc/grpc-java/issues/1901")
-  public static final io.grpc.MethodDescriptor<grpc.testing.EmptyOuterClass.Empty,
-      grpc.testing.EmptyOuterClass.Empty> METHOD_UNIMPLEMENTED_CALL =
-      io.grpc.MethodDescriptor.<grpc.testing.EmptyOuterClass.Empty, grpc.testing.EmptyOuterClass.Empty>newBuilder()
-          .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-          .setFullMethodName(generateFullMethodName(
-              "grpc.testing.TestService", "UnimplementedCall"))
-          .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.EmptyOuterClass.Empty.getDefaultInstance()))
-          .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-              grpc.testing.EmptyOuterClass.Empty.getDefaultInstance()))
-          .setSchemaDescriptor(new TestServiceMethodDescriptorSupplier("UnimplementedCall"))
-          .build();
-
-  /**
-   * Creates a new async stub that supports all call types for the service
-   */
-  public static TestServiceStub newStub(io.grpc.Channel channel) {
-    return new TestServiceStub(channel);
-  }
-
-  /**
-   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
-   */
-  public static TestServiceBlockingStub newBlockingStub(
-      io.grpc.Channel channel) {
-    return new TestServiceBlockingStub(channel);
-  }
-
-  /**
-   * Creates a new ListenableFuture-style stub that supports unary calls on the service
-   */
-  public static TestServiceFutureStub newFutureStub(
-      io.grpc.Channel channel) {
-    return new TestServiceFutureStub(channel);
-  }
-
-  /**
-   * <pre>
-   * A simple service to test the various types of RPCs and experiment with
-   * performance with various types of payload.
-   * </pre>
-   */
-  public static abstract class TestServiceImplBase implements io.grpc.BindableService {
-
-    /**
-     * <pre>
-     * One empty request followed by one empty response.
-     * </pre>
-     */
-    public void emptyCall(grpc.testing.EmptyOuterClass.Empty request,
-        io.grpc.stub.StreamObserver<grpc.testing.EmptyOuterClass.Empty> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_EMPTY_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response.
-     * </pre>
-     */
-    public void unaryCall(grpc.testing.Messages.SimpleRequest request,
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.SimpleResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_UNARY_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response. Response has cache control
-     * headers set such that a caching HTTP proxy (such as GFE) can
-     * satisfy subsequent requests.
-     * </pre>
-     */
-    public void cacheableUnaryCall(grpc.testing.Messages.SimpleRequest request,
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.SimpleResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_CACHEABLE_UNARY_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by a sequence of responses (streamed download).
-     * The server returns the payload with client desired type and sizes.
-     * </pre>
-     */
-    public void streamingOutputCall(grpc.testing.Messages.StreamingOutputCallRequest request,
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_STREAMING_OUTPUT_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests followed by one response (streamed upload).
-     * The server returns the aggregated size of client payload as the result.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingInputCallRequest> streamingInputCall(
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingInputCallResponse> responseObserver) {
-      return asyncUnimplementedStreamingCall(METHOD_STREAMING_INPUT_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests with each request served by the server immediately.
-     * As one request could lead to multiple responses, this interface
-     * demonstrates the idea of full duplexing.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallRequest> fullDuplexCall(
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallResponse> responseObserver) {
-      return asyncUnimplementedStreamingCall(METHOD_FULL_DUPLEX_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests followed by a sequence of responses.
-     * The server buffers all the client requests and then serves them in order. A
-     * stream of responses are returned to the client when the server starts with
-     * first request.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallRequest> halfDuplexCall(
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallResponse> responseObserver) {
-      return asyncUnimplementedStreamingCall(METHOD_HALF_DUPLEX_CALL, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * The test server will not implement this method. It will be used
-     * to test the behavior when clients call unimplemented methods.
-     * </pre>
-     */
-    public void unimplementedCall(grpc.testing.EmptyOuterClass.Empty request,
-        io.grpc.stub.StreamObserver<grpc.testing.EmptyOuterClass.Empty> responseObserver) {
-      asyncUnimplementedUnaryCall(METHOD_UNIMPLEMENTED_CALL, responseObserver);
-    }
-
-    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
-      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
-          .addMethod(
-            METHOD_EMPTY_CALL,
-            asyncUnaryCall(
-              new MethodHandlers<
-                grpc.testing.EmptyOuterClass.Empty,
-                grpc.testing.EmptyOuterClass.Empty>(
-                  this, METHODID_EMPTY_CALL)))
-          .addMethod(
-            METHOD_UNARY_CALL,
-            asyncUnaryCall(
-              new MethodHandlers<
-                grpc.testing.Messages.SimpleRequest,
-                grpc.testing.Messages.SimpleResponse>(
-                  this, METHODID_UNARY_CALL)))
-          .addMethod(
-            METHOD_CACHEABLE_UNARY_CALL,
-            asyncUnaryCall(
-              new MethodHandlers<
-                grpc.testing.Messages.SimpleRequest,
-                grpc.testing.Messages.SimpleResponse>(
-                  this, METHODID_CACHEABLE_UNARY_CALL)))
-          .addMethod(
-            METHOD_STREAMING_OUTPUT_CALL,
-            asyncServerStreamingCall(
-              new MethodHandlers<
-                grpc.testing.Messages.StreamingOutputCallRequest,
-                grpc.testing.Messages.StreamingOutputCallResponse>(
-                  this, METHODID_STREAMING_OUTPUT_CALL)))
-          .addMethod(
-            METHOD_STREAMING_INPUT_CALL,
-            asyncClientStreamingCall(
-              new MethodHandlers<
-                grpc.testing.Messages.StreamingInputCallRequest,
-                grpc.testing.Messages.StreamingInputCallResponse>(
-                  this, METHODID_STREAMING_INPUT_CALL)))
-          .addMethod(
-            METHOD_FULL_DUPLEX_CALL,
-            asyncBidiStreamingCall(
-              new MethodHandlers<
-                grpc.testing.Messages.StreamingOutputCallRequest,
-                grpc.testing.Messages.StreamingOutputCallResponse>(
-                  this, METHODID_FULL_DUPLEX_CALL)))
-          .addMethod(
-            METHOD_HALF_DUPLEX_CALL,
-            asyncBidiStreamingCall(
-              new MethodHandlers<
-                grpc.testing.Messages.StreamingOutputCallRequest,
-                grpc.testing.Messages.StreamingOutputCallResponse>(
-                  this, METHODID_HALF_DUPLEX_CALL)))
-          .addMethod(
-            METHOD_UNIMPLEMENTED_CALL,
-            asyncUnaryCall(
-              new MethodHandlers<
-                grpc.testing.EmptyOuterClass.Empty,
-                grpc.testing.EmptyOuterClass.Empty>(
-                  this, METHODID_UNIMPLEMENTED_CALL)))
-          .build();
-    }
-  }
-
-  /**
-   * <pre>
-   * A simple service to test the various types of RPCs and experiment with
-   * performance with various types of payload.
-   * </pre>
-   */
-  public static final class TestServiceStub extends io.grpc.stub.AbstractStub<TestServiceStub> {
-    private TestServiceStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private TestServiceStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected TestServiceStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new TestServiceStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * One empty request followed by one empty response.
-     * </pre>
-     */
-    public void emptyCall(grpc.testing.EmptyOuterClass.Empty request,
-        io.grpc.stub.StreamObserver<grpc.testing.EmptyOuterClass.Empty> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_EMPTY_CALL, getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response.
-     * </pre>
-     */
-    public void unaryCall(grpc.testing.Messages.SimpleRequest request,
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.SimpleResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_UNARY_CALL, getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response. Response has cache control
-     * headers set such that a caching HTTP proxy (such as GFE) can
-     * satisfy subsequent requests.
-     * </pre>
-     */
-    public void cacheableUnaryCall(grpc.testing.Messages.SimpleRequest request,
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.SimpleResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_CACHEABLE_UNARY_CALL, getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * One request followed by a sequence of responses (streamed download).
-     * The server returns the payload with client desired type and sizes.
-     * </pre>
-     */
-    public void streamingOutputCall(grpc.testing.Messages.StreamingOutputCallRequest request,
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallResponse> responseObserver) {
-      asyncServerStreamingCall(
-          getChannel().newCall(METHOD_STREAMING_OUTPUT_CALL, getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests followed by one response (streamed upload).
-     * The server returns the aggregated size of client payload as the result.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingInputCallRequest> streamingInputCall(
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingInputCallResponse> responseObserver) {
-      return asyncClientStreamingCall(
-          getChannel().newCall(METHOD_STREAMING_INPUT_CALL, getCallOptions()), responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests with each request served by the server immediately.
-     * As one request could lead to multiple responses, this interface
-     * demonstrates the idea of full duplexing.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallRequest> fullDuplexCall(
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallResponse> responseObserver) {
-      return asyncBidiStreamingCall(
-          getChannel().newCall(METHOD_FULL_DUPLEX_CALL, getCallOptions()), responseObserver);
-    }
-
-    /**
-     * <pre>
-     * A sequence of requests followed by a sequence of responses.
-     * The server buffers all the client requests and then serves them in order. A
-     * stream of responses are returned to the client when the server starts with
-     * first request.
-     * </pre>
-     */
-    public io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallRequest> halfDuplexCall(
-        io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallResponse> responseObserver) {
-      return asyncBidiStreamingCall(
-          getChannel().newCall(METHOD_HALF_DUPLEX_CALL, getCallOptions()), responseObserver);
-    }
-
-    /**
-     * <pre>
-     * The test server will not implement this method. It will be used
-     * to test the behavior when clients call unimplemented methods.
-     * </pre>
-     */
-    public void unimplementedCall(grpc.testing.EmptyOuterClass.Empty request,
-        io.grpc.stub.StreamObserver<grpc.testing.EmptyOuterClass.Empty> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(METHOD_UNIMPLEMENTED_CALL, getCallOptions()), request, responseObserver);
-    }
-  }
-
-  /**
-   * <pre>
-   * A simple service to test the various types of RPCs and experiment with
-   * performance with various types of payload.
-   * </pre>
-   */
-  public static final class TestServiceBlockingStub extends io.grpc.stub.AbstractStub<TestServiceBlockingStub> {
-    private TestServiceBlockingStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private TestServiceBlockingStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected TestServiceBlockingStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new TestServiceBlockingStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * One empty request followed by one empty response.
-     * </pre>
-     */
-    public grpc.testing.EmptyOuterClass.Empty emptyCall(grpc.testing.EmptyOuterClass.Empty request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_EMPTY_CALL, getCallOptions(), request);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response.
-     * </pre>
-     */
-    public grpc.testing.Messages.SimpleResponse unaryCall(grpc.testing.Messages.SimpleRequest request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_UNARY_CALL, getCallOptions(), request);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response. Response has cache control
-     * headers set such that a caching HTTP proxy (such as GFE) can
-     * satisfy subsequent requests.
-     * </pre>
-     */
-    public grpc.testing.Messages.SimpleResponse cacheableUnaryCall(grpc.testing.Messages.SimpleRequest request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_CACHEABLE_UNARY_CALL, getCallOptions(), request);
-    }
-
-    /**
-     * <pre>
-     * One request followed by a sequence of responses (streamed download).
-     * The server returns the payload with client desired type and sizes.
-     * </pre>
-     */
-    public java.util.Iterator<grpc.testing.Messages.StreamingOutputCallResponse> streamingOutputCall(
-        grpc.testing.Messages.StreamingOutputCallRequest request) {
-      return blockingServerStreamingCall(
-          getChannel(), METHOD_STREAMING_OUTPUT_CALL, getCallOptions(), request);
-    }
-
-    /**
-     * <pre>
-     * The test server will not implement this method. It will be used
-     * to test the behavior when clients call unimplemented methods.
-     * </pre>
-     */
-    public grpc.testing.EmptyOuterClass.Empty unimplementedCall(grpc.testing.EmptyOuterClass.Empty request) {
-      return blockingUnaryCall(
-          getChannel(), METHOD_UNIMPLEMENTED_CALL, getCallOptions(), request);
-    }
-  }
-
-  /**
-   * <pre>
-   * A simple service to test the various types of RPCs and experiment with
-   * performance with various types of payload.
-   * </pre>
-   */
-  public static final class TestServiceFutureStub extends io.grpc.stub.AbstractStub<TestServiceFutureStub> {
-    private TestServiceFutureStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private TestServiceFutureStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected TestServiceFutureStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new TestServiceFutureStub(channel, callOptions);
-    }
-
-    /**
-     * <pre>
-     * One empty request followed by one empty response.
-     * </pre>
-     */
-    public com.google.common.util.concurrent.ListenableFuture<grpc.testing.EmptyOuterClass.Empty> emptyCall(
-        grpc.testing.EmptyOuterClass.Empty request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_EMPTY_CALL, getCallOptions()), request);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response.
-     * </pre>
-     */
-    public com.google.common.util.concurrent.ListenableFuture<grpc.testing.Messages.SimpleResponse> unaryCall(
-        grpc.testing.Messages.SimpleRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_UNARY_CALL, getCallOptions()), request);
-    }
-
-    /**
-     * <pre>
-     * One request followed by one response. Response has cache control
-     * headers set such that a caching HTTP proxy (such as GFE) can
-     * satisfy subsequent requests.
-     * </pre>
-     */
-    public com.google.common.util.concurrent.ListenableFuture<grpc.testing.Messages.SimpleResponse> cacheableUnaryCall(
-        grpc.testing.Messages.SimpleRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_CACHEABLE_UNARY_CALL, getCallOptions()), request);
-    }
-
-    /**
-     * <pre>
-     * The test server will not implement this method. It will be used
-     * to test the behavior when clients call unimplemented methods.
-     * </pre>
-     */
-    public com.google.common.util.concurrent.ListenableFuture<grpc.testing.EmptyOuterClass.Empty> unimplementedCall(
-        grpc.testing.EmptyOuterClass.Empty request) {
-      return futureUnaryCall(
-          getChannel().newCall(METHOD_UNIMPLEMENTED_CALL, getCallOptions()), request);
-    }
-  }
-
-  private static final int METHODID_EMPTY_CALL = 0;
-  private static final int METHODID_UNARY_CALL = 1;
-  private static final int METHODID_CACHEABLE_UNARY_CALL = 2;
-  private static final int METHODID_STREAMING_OUTPUT_CALL = 3;
-  private static final int METHODID_UNIMPLEMENTED_CALL = 4;
-  private static final int METHODID_STREAMING_INPUT_CALL = 5;
-  private static final int METHODID_FULL_DUPLEX_CALL = 6;
-  private static final int METHODID_HALF_DUPLEX_CALL = 7;
-
-  private static final class MethodHandlers<Req, Resp> implements
-      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
-    private final TestServiceImplBase serviceImpl;
-    private final int methodId;
-
-    MethodHandlers(TestServiceImplBase serviceImpl, int methodId) {
-      this.serviceImpl = serviceImpl;
-      this.methodId = methodId;
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        case METHODID_EMPTY_CALL:
-          serviceImpl.emptyCall((grpc.testing.EmptyOuterClass.Empty) request,
-              (io.grpc.stub.StreamObserver<grpc.testing.EmptyOuterClass.Empty>) responseObserver);
-          break;
-        case METHODID_UNARY_CALL:
-          serviceImpl.unaryCall((grpc.testing.Messages.SimpleRequest) request,
-              (io.grpc.stub.StreamObserver<grpc.testing.Messages.SimpleResponse>) responseObserver);
-          break;
-        case METHODID_CACHEABLE_UNARY_CALL:
-          serviceImpl.cacheableUnaryCall((grpc.testing.Messages.SimpleRequest) request,
-              (io.grpc.stub.StreamObserver<grpc.testing.Messages.SimpleResponse>) responseObserver);
-          break;
-        case METHODID_STREAMING_OUTPUT_CALL:
-          serviceImpl.streamingOutputCall((grpc.testing.Messages.StreamingOutputCallRequest) request,
-              (io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallResponse>) responseObserver);
-          break;
-        case METHODID_UNIMPLEMENTED_CALL:
-          serviceImpl.unimplementedCall((grpc.testing.EmptyOuterClass.Empty) request,
-              (io.grpc.stub.StreamObserver<grpc.testing.EmptyOuterClass.Empty>) responseObserver);
-          break;
-        default:
-          throw new AssertionError();
-      }
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public io.grpc.stub.StreamObserver<Req> invoke(
-        io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        case METHODID_STREAMING_INPUT_CALL:
-          return (io.grpc.stub.StreamObserver<Req>) serviceImpl.streamingInputCall(
-              (io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingInputCallResponse>) responseObserver);
-        case METHODID_FULL_DUPLEX_CALL:
-          return (io.grpc.stub.StreamObserver<Req>) serviceImpl.fullDuplexCall(
-              (io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallResponse>) responseObserver);
-        case METHODID_HALF_DUPLEX_CALL:
-          return (io.grpc.stub.StreamObserver<Req>) serviceImpl.halfDuplexCall(
-              (io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallResponse>) responseObserver);
-        default:
-          throw new AssertionError();
-      }
-    }
-  }
-
-  private static abstract class TestServiceBaseDescriptorSupplier
-      implements io.grpc.protobuf.ProtoFileDescriptorSupplier, io.grpc.protobuf.ProtoServiceDescriptorSupplier {
-    TestServiceBaseDescriptorSupplier() {}
-
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
-      return TestFromProto.getDescriptor();
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.ServiceDescriptor getServiceDescriptor() {
-      return getFileDescriptor().findServiceByName("TestService");
-    }
-  }
-
-  private static final class TestServiceFileDescriptorSupplier
-      extends TestServiceBaseDescriptorSupplier {
-    TestServiceFileDescriptorSupplier() {}
-  }
-
-  private static final class TestServiceMethodDescriptorSupplier
-      extends TestServiceBaseDescriptorSupplier
-      implements io.grpc.protobuf.ProtoMethodDescriptorSupplier {
-    private final String methodName;
-
-    TestServiceMethodDescriptorSupplier(String methodName) {
-      this.methodName = methodName;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.MethodDescriptor getMethodDescriptor() {
-      return getServiceDescriptor().findMethodByName(methodName);
-    }
-  }
-
-  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
-
-  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
-    io.grpc.ServiceDescriptor result = serviceDescriptor;
-    if (result == null) {
-      synchronized (TestServiceGrpc.class) {
-        result = serviceDescriptor;
-        if (result == null) {
-          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
-              .setSchemaDescriptor(new TestServiceFileDescriptorSupplier())
-              .addMethod(METHOD_EMPTY_CALL)
-              .addMethod(METHOD_UNARY_CALL)
-              .addMethod(METHOD_CACHEABLE_UNARY_CALL)
-              .addMethod(METHOD_STREAMING_OUTPUT_CALL)
-              .addMethod(METHOD_STREAMING_INPUT_CALL)
-              .addMethod(METHOD_FULL_DUPLEX_CALL)
-              .addMethod(METHOD_HALF_DUPLEX_CALL)
-              .addMethod(METHOD_UNIMPLEMENTED_CALL)
-              .build();
-        }
-      }
-    }
-    return result;
-  }
-}
diff --git a/src/connector/src/main/java/grpc/testing/main/TestService.java b/src/connector/src/main/java/grpc/testing/main/TestService.java
deleted file mode 100644
index 15675819..00000000
--- a/src/connector/src/main/java/grpc/testing/main/TestService.java
+++ /dev/null
@@ -1,68 +0,0 @@
-package grpc.testing.main;
-
-import com.google.protobuf.ByteString;
-import grpc.testing.EmptyOuterClass.Empty;
-import grpc.testing.Messages.EchoStatus;
-import grpc.testing.Messages.Payload;
-import grpc.testing.Messages.ResponseParameters;
-import grpc.testing.Messages.SimpleRequest;
-import grpc.testing.Messages.SimpleResponse;
-import grpc.testing.Messages.StreamingOutputCallResponse;
-import grpc.testing.TestServiceGrpc.TestServiceImplBase;
-import io.grpc.Status;
-import io.grpc.stub.StreamObserver;
-import java.util.logging.Logger;
-import org.apache.commons.lang3.StringUtils;
-
-/**
- * Implements the service methods defined in test.proto
- */
-public class TestService extends TestServiceImplBase {
-
-  private static final Logger LOGGER = Logger.getLogger(TestService.class.getName());
-
-  @Override
-  public void unaryCall(SimpleRequest request, StreamObserver<SimpleResponse> responseObserver) {
-    if (request.hasResponseStatus()) {
-      EchoStatus echoStatus = request.getResponseStatus();
-      Status status = Status.fromCodeValue(echoStatus.getCode());
-      status = status.withDescription(echoStatus.getMessage());
-      responseObserver.onError(status.asRuntimeException());
-      return;
-    }
-    int responseSizeDesired = request.getResponseSize();
-    String resp = StringUtils.repeat("0", responseSizeDesired);
-    Payload out = Payload.newBuilder().setBody(ByteString.copyFromUtf8(resp)).build();
-    SimpleResponse response = SimpleResponse.newBuilder().setPayload(out).build();
-    responseObserver.onNext(response);
-    responseObserver.onCompleted();
-  }
-
-  @Override
-  public void emptyCall(Empty request, io.grpc.stub.StreamObserver<Empty> responseObserver) {
-    responseObserver.onNext(Empty.newBuilder().build());
-    responseObserver.onCompleted();
-  }
-
-  @Override
-  public void streamingOutputCall(grpc.testing.Messages.StreamingOutputCallRequest request,
-      io.grpc.stub.StreamObserver<grpc.testing.Messages.StreamingOutputCallResponse> responseObserver) {
-    for (ResponseParameters params: request.getResponseParametersList()) {
-      String str = StringUtils.repeat("0", params.getSize());
-      Payload out = Payload.newBuilder().setBody(ByteString.copyFromUtf8(str)).build();
-      StreamingOutputCallResponse resp =
-          StreamingOutputCallResponse.newBuilder().setPayload(out).build();
-      responseObserver.onNext(resp);
-      // do we need to sleep before sending next one out
-      try {
-        if (params.getIntervalUs() >= 1000) {
-          Thread.sleep(params.getIntervalUs() / 1000);
-        }
-      } catch (InterruptedException e) {
-        e.printStackTrace();
-        // TODO ignore?
-      }
-    }
-    responseObserver.onCompleted();
-  }
-}
diff --git a/src/connector/src/main/java/grpc/testing/main/TestServiceAndProxy.java b/src/connector/src/main/java/grpc/testing/main/TestServiceAndProxy.java
index b4e5c094..e44a40a1 100644
--- a/src/connector/src/main/java/grpc/testing/main/TestServiceAndProxy.java
+++ b/src/connector/src/main/java/grpc/testing/main/TestServiceAndProxy.java
@@ -5,7 +5,9 @@
 import com.google.grpcweb.GrpcWebTrafficServlet;
 import io.grpc.Server;
 import io.grpc.ServerBuilder;
+import io.grpc.ServerInterceptors;
 import java.util.EnumSet;
+import java.util.concurrent.Executors;
 import java.util.logging.Logger;
 import javax.servlet.DispatcherType;
 import org.eclipse.jetty.servlet.ServletHandler;
@@ -20,8 +22,12 @@ public class TestServiceAndProxy {
   private static final int GRPC_WEB_PORT = 8080;
 
   private static Server startGrpcService(int port) throws Exception {
+
     Server grpcServer = ServerBuilder.forPort(port)
-        .addService(new TestService())
+        .addService(
+            ServerInterceptors.intercept(
+                new TestServiceImpl(Executors.newSingleThreadScheduledExecutor()),
+                TestServiceImpl.interceptors()))
         .build();
     grpcServer.start();
     LOGGER.info("****  started gRPC Service on port# " + port);
diff --git a/src/connector/src/main/java/grpc/testing/main/TestServiceImpl.java b/src/connector/src/main/java/grpc/testing/main/TestServiceImpl.java
new file mode 100644
index 00000000..3d7e136b
--- /dev/null
+++ b/src/connector/src/main/java/grpc/testing/main/TestServiceImpl.java
@@ -0,0 +1,535 @@
+/*
+ * Copyright 2020 The gRPC Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// *******************  DO NOT EDIT
+// This is copy of the following:
+//  github.com/grpc/grpc-java/blob/master/interop-testing/src/main/java/io/grpc/testing/integration/TestServiceImpl.java
+
+package grpc.testing.main;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Queues;
+import com.google.protobuf.ByteString;
+import io.grpc.ForwardingServerCall.SimpleForwardingServerCall;
+import io.grpc.Metadata;
+import io.grpc.ServerCall;
+import io.grpc.ServerCallHandler;
+import io.grpc.ServerInterceptor;
+import io.grpc.Status;
+import io.grpc.internal.LogExceptionRunnable;
+import io.grpc.stub.ServerCallStreamObserver;
+import io.grpc.stub.StreamObserver;
+import grpc.testing.EmptyProtos;
+import grpc.testing.Messages;
+import grpc.testing.Messages.Payload;
+import grpc.testing.Messages.ResponseParameters;
+import grpc.testing.Messages.SimpleRequest;
+import grpc.testing.Messages.SimpleResponse;
+import grpc.testing.Messages.StreamingInputCallRequest;
+import grpc.testing.Messages.StreamingInputCallResponse;
+import grpc.testing.Messages.StreamingOutputCallRequest;
+import grpc.testing.Messages.StreamingOutputCallResponse;
+import grpc.testing.TestServiceGrpc;
+import java.util.ArrayDeque;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Queue;
+import java.util.Random;
+import java.util.Set;
+import java.util.concurrent.Future;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+import javax.annotation.concurrent.GuardedBy;
+
+/**
+ * Implementation of the business logic for the TestService. Uses an executor to schedule chunks
+ * sent in response streams.
+ */
+public class TestServiceImpl extends TestServiceGrpc.TestServiceImplBase {
+  private final Random random = new Random();
+
+  private final ScheduledExecutorService executor;
+  private final ByteString compressableBuffer;
+
+  /**
+   * Constructs a controller using the given executor for scheduling response stream chunks.
+   */
+  public TestServiceImpl(ScheduledExecutorService executor) {
+    this.executor = executor;
+    this.compressableBuffer = ByteString.copyFrom(new byte[1024]);
+  }
+
+  @Override
+  public void emptyCall(EmptyProtos.Empty request,
+      StreamObserver<EmptyProtos.Empty> responseObserver) {
+    responseObserver.onNext(EmptyProtos.Empty.getDefaultInstance());
+    responseObserver.onCompleted();
+  }
+
+  /**
+   * Immediately responds with a payload of the type and size specified in the request.
+   */
+  @Override
+  public void unaryCall(SimpleRequest req, StreamObserver<SimpleResponse> responseObserver) {
+    ServerCallStreamObserver<SimpleResponse> obs =
+        (ServerCallStreamObserver<SimpleResponse>) responseObserver;
+    SimpleResponse.Builder responseBuilder = SimpleResponse.newBuilder();
+    try {
+      if (req.hasResponseCompressed() && req.getResponseCompressed().getValue()) {
+        obs.setCompression("gzip");
+      } else {
+        obs.setCompression("identity");
+      }
+    } catch (IllegalArgumentException e) {
+      System.out.println("sending error");
+      obs.onError(Status.UNIMPLEMENTED
+          .withDescription("compression not supported.")
+          .withCause(e)
+          .asRuntimeException());
+      return;
+    }
+
+    if (req.getResponseSize() != 0) {
+      // For consistency with the c++ TestServiceImpl, use a random offset for unary calls.
+      // TODO(wonderfly): whether or not this is a good approach needs further discussion.
+      int offset = random.nextInt(compressableBuffer.size());
+      ByteString payload = generatePayload(compressableBuffer, offset, req.getResponseSize());
+      responseBuilder.setPayload(
+          Payload.newBuilder()
+              .setBody(payload));
+    }
+
+    if (req.hasResponseStatus()) {
+      obs.onError(Status.fromCodeValue(req.getResponseStatus().getCode())
+          .withDescription(req.getResponseStatus().getMessage())
+          .asRuntimeException());
+      return;
+    }
+
+    responseObserver.onNext(responseBuilder.build());
+    responseObserver.onCompleted();
+  }
+
+  /**
+   * Given a request that specifies chunk size and interval between responses, creates and schedules
+   * the response stream.
+   */
+  @Override
+  public void streamingOutputCall(StreamingOutputCallRequest request,
+      StreamObserver<StreamingOutputCallResponse> responseObserver) {
+    // Create and start the response dispatcher.
+    new ResponseDispatcher(responseObserver).enqueue(toChunkQueue(request)).completeInput();
+  }
+
+  /**
+   * Waits until we have received all of the request messages and then returns the aggregate payload
+   * size for all of the received requests.
+   */
+  @Override
+  public StreamObserver<Messages.StreamingInputCallRequest> streamingInputCall(
+      final StreamObserver<Messages.StreamingInputCallResponse> responseObserver) {
+    return new StreamObserver<StreamingInputCallRequest>() {
+      private int totalPayloadSize;
+
+      @Override
+      public void onNext(StreamingInputCallRequest message) {
+        totalPayloadSize += message.getPayload().getBody().size();
+      }
+
+      @Override
+      public void onCompleted() {
+        responseObserver.onNext(StreamingInputCallResponse.newBuilder()
+            .setAggregatedPayloadSize(totalPayloadSize).build());
+        responseObserver.onCompleted();
+      }
+
+      @Override
+      public void onError(Throwable cause) {
+        responseObserver.onError(cause);
+      }
+    };
+  }
+
+  /**
+   * True bi-directional streaming. Processes requests as they come in. Begins streaming results
+   * immediately.
+   */
+  @Override
+  public StreamObserver<Messages.StreamingOutputCallRequest> fullDuplexCall(
+      final StreamObserver<Messages.StreamingOutputCallResponse> responseObserver) {
+    final ResponseDispatcher dispatcher = new ResponseDispatcher(responseObserver);
+    return new StreamObserver<StreamingOutputCallRequest>() {
+      @Override
+      public void onNext(StreamingOutputCallRequest request) {
+        if (request.hasResponseStatus()) {
+          dispatcher.cancel();
+          dispatcher.onError(Status.fromCodeValue(request.getResponseStatus().getCode())
+              .withDescription(request.getResponseStatus().getMessage())
+              .asRuntimeException());
+          return;
+        }
+        dispatcher.enqueue(toChunkQueue(request));
+      }
+
+      @Override
+      public void onCompleted() {
+        if (!dispatcher.isCancelled()) {
+          // Tell the dispatcher that all input has been received.
+          dispatcher.completeInput();
+        }
+      }
+
+      @Override
+      public void onError(Throwable cause) {
+        dispatcher.onError(cause);
+      }
+    };
+  }
+
+  /**
+   * Similar to {@link #fullDuplexCall}, except that it waits for all streaming requests to be
+   * received before starting the streaming responses.
+   */
+  @Override
+  public StreamObserver<Messages.StreamingOutputCallRequest> halfDuplexCall(
+      final StreamObserver<Messages.StreamingOutputCallResponse> responseObserver) {
+    final ResponseDispatcher dispatcher = new ResponseDispatcher(responseObserver);
+    final Queue<Chunk> chunks = new ArrayDeque<>();
+    return new StreamObserver<StreamingOutputCallRequest>() {
+      @Override
+      public void onNext(StreamingOutputCallRequest request) {
+        chunks.addAll(toChunkQueue(request));
+      }
+
+      @Override
+      public void onCompleted() {
+        // Dispatch all of the chunks in one shot.
+        dispatcher.enqueue(chunks).completeInput();
+      }
+
+      @Override
+      public void onError(Throwable cause) {
+        dispatcher.onError(cause);
+      }
+    };
+  }
+
+  /**
+   * Schedules the dispatch of a queue of chunks. Whenever chunks are added or input is completed,
+   * the next response chunk is scheduled for delivery to the client. When no more chunks are
+   * available, the stream is half-closed.
+   */
+  private class ResponseDispatcher {
+    private final Chunk completionChunk = new Chunk(0, 0, 0);
+    private final Queue<Chunk> chunks;
+    private final StreamObserver<StreamingOutputCallResponse> responseStream;
+    private boolean scheduled;
+    @GuardedBy("this") private boolean cancelled;
+    private Throwable failure;
+    private Runnable dispatchTask = new Runnable() {
+      @Override
+      @SuppressWarnings("CatchAndPrintStackTrace")
+      public void run() {
+        try {
+
+          // Dispatch the current chunk to the client.
+          try {
+            dispatchChunk();
+          } catch (RuntimeException e) {
+            // Indicate that nothing is scheduled and re-throw.
+            synchronized (ResponseDispatcher.this) {
+              scheduled = false;
+            }
+            throw e;
+          }
+
+          // Schedule the next chunk if there is one.
+          synchronized (ResponseDispatcher.this) {
+            // Indicate that nothing is scheduled.
+            scheduled = false;
+            scheduleNextChunk();
+          }
+        } catch (Throwable t) {
+          t.printStackTrace();
+        }
+      }
+    };
+
+    /**
+     * The {@link StreamObserver} will be used to send the queue of response chunks. Since calls to
+     * {@link StreamObserver} must be synchronized across threads, no further calls should be made
+     * directly on {@code responseStream} after it is provided to the {@link ResponseDispatcher}.
+     */
+    public ResponseDispatcher(StreamObserver<StreamingOutputCallResponse> responseStream) {
+      this.chunks = Queues.newLinkedBlockingQueue();
+      this.responseStream = responseStream;
+    }
+
+    /**
+     * Adds the given chunks to the response stream and schedules the next chunk to be delivered if
+     * needed.
+     */
+    public synchronized ResponseDispatcher enqueue(Queue<Chunk> moreChunks) {
+      assertNotFailed();
+      chunks.addAll(moreChunks);
+      scheduleNextChunk();
+      return this;
+    }
+
+    /**
+     * Indicates that the input is completed and the currently enqueued response chunks are all that
+     * remain to be scheduled for dispatch to the client.
+     */
+    public ResponseDispatcher completeInput() {
+      assertNotFailed();
+      chunks.add(completionChunk);
+      scheduleNextChunk();
+      return this;
+    }
+
+    /**
+     * Allows the service to cancel the remaining responses.
+     */
+    public synchronized void cancel() {
+      Preconditions.checkState(!cancelled, "Dispatcher already cancelled");
+      chunks.clear();
+      cancelled = true;
+    }
+
+    public synchronized boolean isCancelled() {
+      return cancelled;
+    }
+
+    private synchronized void onError(Throwable cause) {
+      responseStream.onError(cause);
+    }
+
+    /**
+     * Dispatches the current response chunk to the client. This is only called by the executor. At
+     * any time, a given dispatch task should only be registered with the executor once.
+     */
+    private synchronized void dispatchChunk() {
+      if (cancelled) {
+        return;
+      }
+      try {
+        // Pop off the next chunk and send it to the client.
+        Chunk chunk = chunks.remove();
+        if (chunk == completionChunk) {
+          responseStream.onCompleted();
+        } else {
+          responseStream.onNext(chunk.toResponse());
+        }
+      } catch (Throwable e) {
+        failure = e;
+        if (Status.fromThrowable(e).getCode() == Status.CANCELLED.getCode()) {
+          // Stream was cancelled by client, responseStream.onError() might be called already or
+          // will be called soon by inbounding StreamObserver.
+          chunks.clear();
+        } else {
+          responseStream.onError(e);
+        }
+      }
+    }
+
+    /**
+     * Schedules the next response chunk to be dispatched. If all input has been received and there
+     * are no more chunks in the queue, the stream is closed.
+     */
+    private void scheduleNextChunk() {
+      synchronized (this) {
+        if (scheduled) {
+          // Dispatch task is already scheduled.
+          return;
+        }
+
+        // Schedule the next response chunk if there is one.
+        Chunk nextChunk = chunks.peek();
+        if (nextChunk != null) {
+          scheduled = true;
+          // TODO(ejona): cancel future if RPC is cancelled
+          Future<?> unused = executor.schedule(new LogExceptionRunnable(dispatchTask),
+              nextChunk.delayMicroseconds, TimeUnit.MICROSECONDS);
+          return;
+        }
+      }
+    }
+
+    private void assertNotFailed() {
+      if (failure != null) {
+        throw new IllegalStateException("Stream already failed", failure);
+      }
+    }
+  }
+
+  /**
+   * Breaks down the request and creates a queue of response chunks for the given request.
+   */
+  public Queue<Chunk> toChunkQueue(StreamingOutputCallRequest request) {
+    Queue<Chunk> chunkQueue = new ArrayDeque<>();
+    int offset = 0;
+    for (ResponseParameters params : request.getResponseParametersList()) {
+      chunkQueue.add(new Chunk(params.getIntervalUs(), offset, params.getSize()));
+
+      // Increment the offset past this chunk. Buffer need to be circular.
+      offset = (offset + params.getSize()) % compressableBuffer.size();
+    }
+    return chunkQueue;
+  }
+
+  /**
+   * A single chunk of a response stream. Contains delivery information for the dispatcher and can
+   * be converted to a streaming response proto. A chunk just references it's payload in the
+   * {@link #compressableBuffer} array. The payload isn't actually created until {@link
+   * #toResponse()} is called.
+   */
+  private class Chunk {
+    private final int delayMicroseconds;
+    private final int offset;
+    private final int length;
+
+    public Chunk(int delayMicroseconds, int offset, int length) {
+      this.delayMicroseconds = delayMicroseconds;
+      this.offset = offset;
+      this.length = length;
+    }
+
+    /**
+     * Convert this chunk into a streaming response proto.
+     */
+    private StreamingOutputCallResponse toResponse() {
+      StreamingOutputCallResponse.Builder responseBuilder =
+          StreamingOutputCallResponse.newBuilder();
+      ByteString payload = generatePayload(compressableBuffer, offset, length);
+      responseBuilder.setPayload(
+          Payload.newBuilder()
+              .setBody(payload));
+      return responseBuilder.build();
+    }
+  }
+
+  /**
+   * Generates a payload of desired type and size. Reads compressableBuffer or
+   * uncompressableBuffer as a circular buffer.
+   */
+  private ByteString generatePayload(ByteString dataBuffer, int offset, int size) {
+    ByteString payload = ByteString.EMPTY;
+    // This offset would never pass the array boundary.
+    int begin = offset;
+    int end = 0;
+    int bytesLeft = size;
+    while (bytesLeft > 0) {
+      end = Math.min(begin + bytesLeft, dataBuffer.size());
+      // ByteString.substring returns the substring from begin, inclusive, to end, exclusive.
+      payload = payload.concat(dataBuffer.substring(begin, end));
+      bytesLeft -= (end - begin);
+      begin = end % dataBuffer.size();
+    }
+    return payload;
+  }
+
+  /** Returns interceptors necessary for full service implementation. */
+  public static List<ServerInterceptor> interceptors() {
+    return Arrays.asList(
+        echoRequestHeadersInterceptor(Util.METADATA_KEY),
+        echoRequestMetadataInHeaders(Util.ECHO_INITIAL_METADATA_KEY),
+        echoRequestMetadataInTrailers(Util.ECHO_TRAILING_METADATA_KEY));
+  }
+
+  /**
+   * Echo the request headers from a client into response headers and trailers. Useful for
+   * testing end-to-end metadata propagation.
+   */
+  private static ServerInterceptor echoRequestHeadersInterceptor(final Metadata.Key<?>... keys) {
+    final Set<Metadata.Key<?>> keySet = new HashSet<>(Arrays.asList(keys));
+    return new ServerInterceptor() {
+      @Override
+      public <ReqT, RespT> ServerCall.Listener<ReqT> interceptCall(
+          ServerCall<ReqT, RespT> call,
+          final Metadata requestHeaders,
+          ServerCallHandler<ReqT, RespT> next) {
+        return next.startCall(new SimpleForwardingServerCall<ReqT, RespT>(call) {
+              @Override
+              public void sendHeaders(Metadata responseHeaders) {
+                responseHeaders.merge(requestHeaders, keySet);
+                super.sendHeaders(responseHeaders);
+              }
+
+              @Override
+              public void close(Status status, Metadata trailers) {
+                trailers.merge(requestHeaders, keySet);
+                super.close(status, trailers);
+              }
+            }, requestHeaders);
+      }
+    };
+  }
+
+  /**
+   * Echoes request headers with the specified key(s) from a client into response headers only.
+   */
+  private static ServerInterceptor echoRequestMetadataInHeaders(final Metadata.Key<?>... keys) {
+    final Set<Metadata.Key<?>> keySet = new HashSet<>(Arrays.asList(keys));
+    return new ServerInterceptor() {
+      @Override
+      public <ReqT, RespT> ServerCall.Listener<ReqT> interceptCall(
+          ServerCall<ReqT, RespT> call,
+          final Metadata requestHeaders,
+          ServerCallHandler<ReqT, RespT> next) {
+        return next.startCall(new SimpleForwardingServerCall<ReqT, RespT>(call) {
+          @Override
+          public void sendHeaders(Metadata responseHeaders) {
+            responseHeaders.merge(requestHeaders, keySet);
+            super.sendHeaders(responseHeaders);
+          }
+
+          @Override
+          public void close(Status status, Metadata trailers) {
+            super.close(status, trailers);
+          }
+        }, requestHeaders);
+      }
+    };
+  }
+
+  /**
+   * Echoes request headers with the specified key(s) from a client into response trailers only.
+   */
+  private static ServerInterceptor echoRequestMetadataInTrailers(final Metadata.Key<?>... keys) {
+    final Set<Metadata.Key<?>> keySet = new HashSet<>(Arrays.asList(keys));
+    return new ServerInterceptor() {
+      @Override
+      public <ReqT, RespT> ServerCall.Listener<ReqT> interceptCall(
+          ServerCall<ReqT, RespT> call,
+          final Metadata requestHeaders,
+          ServerCallHandler<ReqT, RespT> next) {
+        return next.startCall(new SimpleForwardingServerCall<ReqT, RespT>(call) {
+          @Override
+          public void sendHeaders(Metadata responseHeaders) {
+            super.sendHeaders(responseHeaders);
+          }
+
+          @Override
+          public void close(Status status, Metadata trailers) {
+            trailers.merge(requestHeaders, keySet);
+            super.close(status, trailers);
+          }
+        }, requestHeaders);
+      }
+    };
+  }
+}
diff --git a/src/connector/src/main/java/grpc/testing/main/Util.java b/src/connector/src/main/java/grpc/testing/main/Util.java
new file mode 100644
index 00000000..a047429e
--- /dev/null
+++ b/src/connector/src/main/java/grpc/testing/main/Util.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2020 The gRPC Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// *******************  DO NOT EDIT
+// This is copy of the following:
+//  github.com/grpc/grpc-java/blob/master/interop-testing/src/main/java/io/grpc/testing/integration/Util.java
+
+package grpc.testing.main;
+
+import io.grpc.Metadata;
+import io.grpc.protobuf.lite.ProtoLiteUtils;
+import grpc.testing.Messages;
+
+/**
+ * Utility methods to support integration testing.
+ */
+public class Util {
+
+  public static final Metadata.Key<Messages.SimpleContext> METADATA_KEY =
+      Metadata.Key.of(
+          "grpc.testing.SimpleContext" + Metadata.BINARY_HEADER_SUFFIX,
+          ProtoLiteUtils.metadataMarshaller(Messages.SimpleContext.getDefaultInstance()));
+  public static final Metadata.Key<String> ECHO_INITIAL_METADATA_KEY
+      = Metadata.Key.of("x-grpc-test-echo-initial", Metadata.ASCII_STRING_MARSHALLER);
+  public static final Metadata.Key<byte[]> ECHO_TRAILING_METADATA_KEY
+      = Metadata.Key.of("x-grpc-test-echo-trailing-bin", Metadata.BINARY_BYTE_MARSHALLER);
+}
diff --git a/src/connector/src/main/proto/grpc/testing/empty.proto b/src/connector/src/main/proto/grpc/testing/empty.proto
index 6a0aa88d..c7584c88 100644
--- a/src/connector/src/main/proto/grpc/testing/empty.proto
+++ b/src/connector/src/main/proto/grpc/testing/empty.proto
@@ -1,5 +1,4 @@
-
-// Copyright 2015 gRPC authors.
+// Copyright 2015 The gRPC Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -13,10 +12,17 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-syntax = "proto3";
+// *******************  DO NOT EDIT
+// This is copy of the following:
+//  github.com/grpc/grpc-java/blob/master/interop-testing/src/main/proto/grpc/testing/empty.proto
+
+syntax = "proto2";
 
 package grpc.testing;
 
+option java_package = "grpc.testing";
+option java_outer_classname = "EmptyProtos";
+
 // An empty message that you can re-use to avoid defining duplicated empty
 // messages in your project. A typical example is to use it as argument or the
 // return value of a service API. For instance:
diff --git a/src/connector/src/main/proto/grpc/testing/messages.proto b/src/connector/src/main/proto/grpc/testing/messages.proto
index 5993bc6b..9fb45a6d 100644
--- a/src/connector/src/main/proto/grpc/testing/messages.proto
+++ b/src/connector/src/main/proto/grpc/testing/messages.proto
@@ -1,5 +1,4 @@
-
-// Copyright 2015-2016 gRPC authors.
+// Copyright 2015 The gRPC Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -15,28 +14,26 @@
 
 // Message definitions to be used by integration test service definitions.
 
+// *******************  DO NOT EDIT
+// This is copy of the following:
+//  github.com/grpc/grpc-java/blob/master/interop-testing/src/main/proto/grpc/testing/messages.proto
+
 syntax = "proto3";
 
 package grpc.testing;
 
-// TODO(dgq): Go back to using well-known types once
-// https://github.com/grpc/grpc/issues/6980 has been fixed.
-// import "google/protobuf/wrappers.proto";
+option java_package = "grpc.testing";
+
+// TODO(jihuncho): Use well-known types once all languages are synced.
 message BoolValue {
   // The bool value.
   bool value = 1;
 }
 
-// The type of payload that should be returned.
-enum PayloadType {
-  // Compressable text format.
-  COMPRESSABLE = 0;
-}
-
 // A block of data, to simply increase gRPC message size.
 message Payload {
-  // The type of data in body.
-  PayloadType type = 1;
+  reserved 1;
+
   // Primary contents of payload.
   bytes body = 2;
 }
@@ -65,9 +62,7 @@ enum GrpclbRouteType {
 
 // Unary request.
 message SimpleRequest {
-  // Desired payload type in the response from the server.
-  // If response_type is RANDOM, server randomly chooses one from other formats.
-  PayloadType response_type = 1;
+  reserved 1;
 
   // Desired payload size in the response from the server.
   int32 response_size = 2;
@@ -95,9 +90,6 @@ message SimpleRequest {
 
   // Whether SimpleResponse should include server_id.
   bool fill_server_id = 9;
-
-  // Whether SimpleResponse should include grpclb_route_type.
-  bool fill_grpclb_route_type = 10;
 }
 
 // Unary response, as configured by the request.
@@ -109,17 +101,19 @@ message SimpleResponse {
   string username = 2;
   // OAuth scope.
   string oauth_scope = 3;
-
   // Server ID. This must be unique among different server instances,
   // but the same across all RPC's made to a particular server instance.
   string server_id = 4;
   // gRPCLB Path.
   GrpclbRouteType grpclb_route_type = 5;
-
   // Server hostname.
   string hostname = 6;
 }
 
+message SimpleContext {
+  string value = 1;
+}
+
 // Client-streaming request.
 message StreamingInputCallRequest {
   // Optional input payload sent along with the request.
@@ -158,11 +152,7 @@ message ResponseParameters {
 
 // Server-streaming request.
 message StreamingOutputCallRequest {
-  // Desired payload type in the response from the server.
-  // If response_type is RANDOM, the payload from each response in the stream
-  // might be of different types. This is to simulate a mixed type of payload
-  // stream.
-  PayloadType response_type = 1;
+  reserved 1;
 
   // Configuration for each expected response message.
   repeated ResponseParameters response_parameters = 2;
diff --git a/src/connector/src/main/proto/grpc/testing/test.proto b/src/connector/src/main/proto/grpc/testing/test.proto
index 82c17655..c1e31ce3 100644
--- a/src/connector/src/main/proto/grpc/testing/test.proto
+++ b/src/connector/src/main/proto/grpc/testing/test.proto
@@ -1,5 +1,4 @@
-
-// Copyright 2015-2016 gRPC authors.
+// Copyright 2015 The gRPC Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -12,9 +11,11 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-
 // An integration test service that covers all the method signature permutations
 // of unary/streaming requests/responses.
+// *******************  DO NOT EDIT
+// This is copy of the following:
+//  github.com/grpc/grpc-java/blob/master/interop-testing/src/main/proto/grpc/testing/test.proto
 
 syntax = "proto3";
 
@@ -23,6 +24,8 @@ import "grpc/testing/messages.proto";
 
 package grpc.testing;
 
+option java_package = "grpc.testing";
+
 // A simple service to test the various types of RPCs and experiment with
 // performance with various types of payload.
 service TestService {
@@ -74,7 +77,7 @@ service UnimplementedService {
 
 // A service used to control reconnect server.
 service ReconnectService {
-  rpc Start(grpc.testing.ReconnectParams) returns (grpc.testing.Empty);
+  rpc Start(grpc.testing.Empty) returns (grpc.testing.Empty);
   rpc Stop(grpc.testing.Empty) returns (grpc.testing.ReconnectInfo);
 }