@Override
  public final void close() {
    stub.close();
  }
HealthCheck method checks the health status of the 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 (HealthCheckServiceClient healthCheckServiceClient = HealthCheckServiceClient.create()) {
  HealthCheckRequest request =
      HealthCheckRequest.newBuilder()
          .setCluster(ClusterName.of("[PROJECT]", "[LOCATION]", "[CLUSTER]").toString())
          .build();
  ApiFuture<HealthCheckResponse> future =
      healthCheckServiceClient.healthCheckCallable().futureCall(request);
  // Do something.
  HealthCheckResponse response = future.get();
}
}</pre>
java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/HealthCheckServiceClient.java