code: @BetaApi
    public final Operation setLabelsInstance(
        String instance, InstancesSetLabelsRequest instancesSetLabelsRequestResource) {
  
      SetLabelsInstanceHttpRequest request =
          SetLabelsInstanceHttpRequest.newBuilder()
              .setInstance(instance)
              .setInstancesSetLabelsRequestResource(instancesSetLabelsRequestResource)
              .build();
      return setLabelsInstance(request);
    }
docs: Sets labels on an instance. To learn more about labels, read the Labeling Resources
  documentation.
  
  <p>Sample code:
  
  <pre><code>
  try (InstanceClient instanceClient = InstanceClient.create()) {
  ProjectZoneInstanceName instance = ProjectZoneInstanceName.of("[PROJECT]", "[ZONE]", "[INSTANCE]");
  InstancesSetLabelsRequest instancesSetLabelsRequestResource = InstancesSetLabelsRequest.newBuilder().build();
  Operation response = instanceClient.setLabelsInstance(instance.toString(), instancesSetLabelsRequestResource);
  }
  </code></pre>
  
  @param instance Name of the instance scoping this request.
  @param instancesSetLabelsRequestResource
  @throws com.google.api.gax.rpc.ApiException if the remote call fails