public final OperationFuture<WorkstationCluster, OperationMetadata> updateWorkstationClusterAsync(
      WorkstationCluster workstationCluster, FieldMask updateMask) {
    UpdateWorkstationClusterRequest request =
        UpdateWorkstationClusterRequest.newBuilder()
            .setWorkstationCluster(workstationCluster)
            .setUpdateMask(updateMask)
            .build();
    return updateWorkstationClusterAsync(request);
  }
Updates an existing workstation cluster.

<p>Sample code:

<pre>{@code
// This snippet has been automatically generated and should be regarded as a code template only.
// It will require modifications to work:
// - It may require correct/in-range values for request initialization.
// - It may require specifying regional endpoints when creating the service client as shown in
// https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
try (WorkstationsClient workstationsClient = WorkstationsClient.create()) {
  WorkstationCluster workstationCluster = WorkstationCluster.newBuilder().build();
  FieldMask updateMask = FieldMask.newBuilder().build();
  WorkstationCluster response =
      workstationsClient.updateWorkstationClusterAsync(workstationCluster, updateMask).get();
}
}</pre>

@param workstationCluster Required. Workstation cluster to update.
@param updateMask Required. Mask that specifies which fields in the workstation cluster should
    be updated.
@throws com.google.api.gax.rpc.ApiException if the remote call fails
java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1beta/WorkstationsClient.java