docs: public Observable<GenericResourceInner> updateByIdAsync(String resourceId, String apiVersion, GenericResourceInner parameters) {
          return updateByIdWithServiceResponseAsync(resourceId, apiVersion, parameters).map(new Func1<ServiceResponse<GenericResourceInner>, GenericResourceInner>() {
              @Override
              public GenericResourceInner call(ServiceResponse<GenericResourceInner> response) {
                  return response.body();
              }
          });
      }