code: def add_distribution_list_alias(self, distribution_list, alias):
          
          self.request('AddDistributionListAlias', {
              'id': self._get_or_fetch_id(
                  distribution_list, self.get_distribution_list
                  ),
              'alias': alias,
          })
docs: :param distribution_list:  a distribution list object to be used as
           a selector
          :param alias:     email alias address
          :returns:         None (the API itself returns nothing)