code: @BetaApi(
        "The surface for long-running operations is not stable yet and may change in the future.")
    public final OperationFuture<Empty, ClusterOperationMetadata> deleteClusterAsync(
        String projectId, String region, String clusterName) {
  
      DeleteClusterRequest request =
          DeleteClusterRequest.newBuilder()
              .setProjectId(projectId)
              .setRegion(region)
              .setClusterName(clusterName)
              .build();
      return deleteClusterAsync(request);
    }
docs: Deletes a cluster in a project.
  
  <p>Sample code:
  
  <pre><code>
  try (ClusterControllerClient clusterControllerClient = ClusterControllerClient.create()) {
  String projectId = "";
  String region = "";
  String clusterName = "";
  clusterControllerClient.deleteClusterAsync(projectId, region, clusterName).get();
  }
  </code></pre>
  
  @param projectId Required. The ID of the Google Cloud Platform project that the cluster belongs
  to.
  @param region Required. The Cloud Dataproc region in which to handle the request.
  @param clusterName Required. The cluster name.
  @throws com.google.api.gax.rpc.ApiException if the remote call fails