docs: def GroupSensorsMetatagsGet(self, group_id, parameters, namespace = None):
          """
              Retrieve sensors in a group with their metatags.
              
              @param group_id (int) - Group id for which to retrieve metatags.
              @param namespace (string) - Namespace for which to retrieve the metatags.
              @param parameters (dictionary) - Dictionary containing further parameters.
              
              @return (bool) - Boolean indicating whether GroupSensorsMetatagsGet was successful
          """
          ns = "default" if namespace is None else namespace
          parameters['namespace'] = ns
          if self.__SenseApiCall__('/groups/{0}/sensors/metatags.json'.format(group_id), 'GET', parameters = parameters):
              return True
          else:
              self.__error__ = "api call unsuccessful"
              return False