code: def _build_all_dependencies(self):
          '''
          Helper function to build a map of model to their list of model reference dependencies
          '''
          ret = {}
          for model, schema in six.iteritems(self._models()):
              dep_list = self._build_dependent_model_list(schema)
              ret[model] = dep_list
          return ref _build_all_dependencies(self):
          '''
          Helper function to build a map of model to their list of model reference dependencies
          '''
          ret = {}
          for model, schema in six.iteritems(self._models()):
              dep_list = self._build_dependent_model_list(schema)
              ret[model] = dep_list
          return ret
docs: Helper function to build a map of model to their list of model reference dependencies