code: public Observable<ImageRegionCreateSummary> createImageRegionsAsync(UUID projectId, CreateImageRegionsOptionalParameter createImageRegionsOptionalParameter) {
          return createImageRegionsWithServiceResponseAsync(projectId, createImageRegionsOptionalParameter).map(new Func1<ServiceResponse<ImageRegionCreateSummary>, ImageRegionCreateSummary>() {
              @Override
              public ImageRegionCreateSummary call(ServiceResponse<ImageRegionCreateSummary> response) {
                  return response.body();
              }
          });
      }
docs: Create a set of image regions.
  This API accepts a batch of image regions, and optionally tags, to update existing images with region information.
  There is a limit of 64 entries in the batch.
  
  @param projectId The project id
  @param createImageRegionsOptionalParameter the object representing the optional parameters to be set before calling this API
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the ImageRegionCreateSummary object