code: def _set_keys_for_save_query(self, query):
          
          query.where(self.__foreign_key, self.get_attribute(self.__foreign_key))
  
          return query.where(self.__other_key, self.get_attribute(self.__other_key))
docs: Set the keys for a save update query.
  
          :param query: A Builder instance
          :type query: orator.orm.Builder
  
          :return: The Builder instance
          :rtype: orator.orm.Builder