Fix: Map keys and values getters #496

	name: Java CI

	on: [ push, pull_request ]

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/[email protected]
	with:
	submodules: 'recursive'
	- name: Set up JDK 1.8
	uses: actions/setup-java@v1
	with:
	java-version: 1.8
	- name: Cache
	uses: actions/cache@v1
	with:
	path: ~/.gradle/caches
	key: ${{ runner.os }}-gradle-${{ hashFiles('build.gradle') }}
	- name: Executable gradlew
	run: chmod +x gradlew
	- name: Build with Gradle
	run: ./gradlew build

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