def GetDownloadSerializationData(src_obj_metadata, progress=0):

  serialization_dict = {
      'auto_transfer': 'False',
      'progress': progress,
      'total_size': src_obj_metadata.size,
      'url': src_obj_metadata.mediaLink
  }

  return json.dumps(serialization_dict)
Low level update of the internal _data dict. Data which are coming as
dataset/ETHPy150Open GoogleCloudPlatform/gsutil/gslib/cloud_api_helper.py/GetDownloadSerializationData--crossover with--dataset/ETHPy150Open robgolding63/tasklib/tasklib/task.py/TaskResource._update_data