get list of room members

def room_members(self, stream_id):
        ''' get list of room members '''
        req_hook = 'pod/v2/room/' + str(stream_id) + '/membership/list'
        req_args = None
        status_code, response = self.__rest__.GET_query(req_hook, req_args)
        self.logger.debug('%s: %s' % (status_code, response))
        return status_code, response