def GetLoadingOrder(self):
    result = {}
    for filename, mapping in self._file_mapping.iteritems():
      loading_order = mapping['loading_order']
      if loading_order is not None:
        result[loading_order] = filename
    return list(result[key] for key in sorted(result))
Delete a document from collection by its ``ObjectId``,
dataset/ETHPy150Open google/transitfeed/transitfeed/gtfsfactory.py/GtfsFactory.GetLoadingOrder--crossover with--dataset/ETHPy150Open tevino/mongu/mongu.py/Model.delete_by_id