我是gcp的新手，目前我正在寻找使用java创建dataproc集群，并为其添加某些标签。
对于集群创建，我使用以下代码：

String clusterName = "XXXXXX";
    String projectId   = "YYYYYY";
    String region      = "us-central1";

    String myEndpoint = String.format("%s-dataproc.googleapis.com:443", region);

    ClusterControllerSettings clusterControllerSettings = ClusterControllerSettings.newBuilder()
            .setEndpoint(myEndpoint).build();

    ClusterControllerClient clusterControllerClient = ClusterControllerClient
            .create(clusterControllerSettings);

        InstanceGroupConfig masterConfig = InstanceGroupConfig.newBuilder().setMachineTypeUri("n1-standard-1")
                .setNumInstances(1).build();
        InstanceGroupConfig workerConfig = InstanceGroupConfig.newBuilder().setMachineTypeUri("n1-standard-1")
                .setNumInstances(2).build();
        ClusterConfig clusterConfig = ClusterConfig.newBuilder()
                .setMasterConfig(masterConfig).setWorkerConfig(workerConfig).build();

        Cluster cluster = Cluster.newBuilder().setClusterName(clusterName).setConfig(clusterConfig).build();

        OperationFuture<Cluster, ClusterOperationMetadata> createClusterAsyncRequest = clusterControllerClient
                .createClusterAsync(projectId, region, cluster);
        Cluster response = createClusterAsyncRequest.get();

集群创建工作正常。但是我不能在使用java代码创建集群的过程中添加标签。有什么建议吗？
gcp控制台的标签看起来像this:labels