Method createDatabase

bindings/java/JavaWorkload.cpp:480–493

	}

	jobject createDatabase(jobject workload, FDBDatabase* db) {
		auto executor = env->CallObjectMethod(workload,
		                                      getMethod(getClass("com/apple/foundationdb/testing/AbstractWorkload"),
		                                                "getExecutor",
		                                                "()Ljava/util/concurrent/Executor;"));
		auto databaseClass = getClass("com/apple/foundationdb/FDBDatabase");
		jlong databasePtr = reinterpret_cast<jlong>(db);
		jobject javaDatabase = env->NewObject(databaseClass,
		                                      getMethod(databaseClass, "<init>", "(JLjava/util/concurrent/Executor;)V"),
		                                      databasePtr,
		                                      executor);
		env->DeleteLocalRef(executor);
		return javaDatabase;
	}

	void callWorkload(jobject workload, FDBDatabase* db, const char* method, GenericPromise<bool>&& promise) {
		jobject jPromise = nullptr;