docs: public Observable<GalleryImageInner> updateAsync(String resourceGroupName, String labAccountName, String galleryImageName, GalleryImageFragment galleryImage) {
          return updateWithServiceResponseAsync(resourceGroupName, labAccountName, galleryImageName, galleryImage).map(new Func1<ServiceResponse<GalleryImageInner>, GalleryImageInner>() {
              @Override
              public GalleryImageInner call(ServiceResponse<GalleryImageInner> response) {
                  return response.body();
              }
          });
      }