code: @BetaApi
    public final BackendServiceGroupHealth getHealthBackendService(
        ProjectGlobalBackendServiceName backendService,
        ResourceGroupReference resourceGroupReferenceResource) {
  
      GetHealthBackendServiceHttpRequest request =
          GetHealthBackendServiceHttpRequest.newBuilder()
              .setBackendService(backendService == null ? null : backendService.toString())
              .setResourceGroupReferenceResource(resourceGroupReferenceResource)
              .build();
      return getHealthBackendService(request);
    }
docs: Gets the most recent health check results for this BackendService.
  
  <p>Sample code:
  
  <pre><code>
  try (BackendServiceClient backendServiceClient = BackendServiceClient.create()) {
  ProjectGlobalBackendServiceName backendService = ProjectGlobalBackendServiceName.of("[PROJECT]", "[BACKEND_SERVICE]");
  ResourceGroupReference resourceGroupReferenceResource = ResourceGroupReference.newBuilder().build();
  BackendServiceGroupHealth response = backendServiceClient.getHealthBackendService(backendService, resourceGroupReferenceResource);
  }
  </code></pre>
  
  @param backendService Name of the BackendService resource to which the queried instance
  belongs.
  @param resourceGroupReferenceResource
  @throws com.google.api.gax.rpc.ApiException if the remote call fails