@Override
  public UnaryCallable<DeleteEventRequest, Operation> deleteEventCallable() {
    return deleteEventCallable;
  }
Constructs an instance of HttpJsonStreamsServiceStub, 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-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/stub/HttpJsonStreamsServiceStub.java