code: def get_group_members(self, group_name):
          
          res = self._make_ocs_request(
              'GET',
              self.OCS_SERVICE_CLOUD,
              'groups/' + group_name
          )
  
          if res.status_code == 200:
              tree = ET.fromstring(res.content)
              self._check_ocs_status(tree, [100])
              return [group.text for group in tree.find('data/users')]
  
          raise HTTPResponseError(res)
docs: Get group members via provisioning API.
          If you get back an error 999, then the provisioning API is not enabled.
  
          :param group_name:  name of group to list members
          :returns: list of group members
          :raises: HTTPResponseError in case an HTTP error status was returned