@Override
  public void shutdownNow() {
    backgroundResources.shutdownNow();
  }
Constructs an instance of HttpJsonTelcoAutomationStub, using the given settings. This is
protected so that it is easy to make a subclass, but otherwise, the static factory methods
should be preferred.
java-telcoautomation/google-cloud-telcoautomation/src/main/java/com/google/cloud/telcoautomation/v1/stub/HttpJsonTelcoAutomationStub.java