Add getGroup() to multi

src/Client/Multi.php

@@ -7,7 +7,7 @@
 use function Amp\{async, delay};
 
 use Amp\Pipeline\{ConcurrentIterator, Queue};
-use AO\{Package, Parser, Utils};
+use AO\{Group, Package, Parser, Utils};
 use Closure;
 use InvalidArgumentException;
 use Nadylib\LeakyBucket\LeakyBucket;
@@ -64,6 +64,17 @@ public function __construct(
 		}
 	}
 
+	/**
+	 * Get infomation about a public group we're in
+	 *
+	 * @param string|Group\Id $id the name or id of the group
+	 *
+	 * @return Group|null Information about the group, or NULL, if we're not in it
+	 */
+	public function getGroup(string|Group\Id $id): ?Group {
+		return $this->getBestWorker()?->getGroup($id);
+	}
+
 	public function isReady(): bool {
 		return $this->isReady;
 	}