get stream members

def stream_members(self, stream_id):
        ''' get stream members '''
        response, status_code = self.__pod__.Streams.get_v1_admin_stream_id_membership_list(
            sessionToken=self.__session__,
            id=stream_id
        ).result()
        self.logger.debug('%s: %s' % (status_code, response))
        return status_code, response