code: public void deleteImageRegions(UUID projectId, List<String> regionIds) {
          deleteImageRegionsWithServiceResponseAsync(projectId, regionIds).toBlocking().single().body();
      }
docs: Delete a set of image regions.
  
  @param projectId The project id
  @param regionIds Regions to delete. Limited to 64
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent