code: def real_main(release_url=None,
                tests_json_path=None,
                upload_build_id=None,
                upload_release_name=None):
      
      coordinator = workers.get_coordinator()
      fetch_worker.register(coordinator)
      coordinator.start()
  
      data = open(FLAGS.tests_json_path).read()
      tests = load_tests(data)
  
      item = DiffMyImages(
          release_url,
          tests,
          upload_build_id,
          upload_release_name,
          heartbeat=workers.PrintWorkflow)
      item.root = True
  
      coordinator.input_queue.put(item)
      coordinator.wait_one()
      coordinator.stop()
      coordinator.join()
docs: Runs diff_my_images.