code: def memberships(self, group, include=None):
          
          return self._get(self._build_url(self.endpoint.memberships(id=group, include=include)))
docs: Return the GroupMemberships for this group.
  
          :param include: list of objects to sideload. `Side-loading API Docs 
              <https://developer.zendesk.com/rest_api/docs/core/side_loading>`__.
          :param group: Group object or id