code: @Override
    public D createServiceDescriptor(Class<?> interfaceClass, String version) {
      return adsServiceDescriptorFactory.create(interfaceClass, version);
    }
docs: Creates an {@link AdsServiceDescriptor} for a specified service.
  
  @param interfaceClass the ads service that we want a descriptor for
  @param version the version of the service
  @return a descriptor of the requested service