def execute(self):
        self._send('EXEC')
        return self.getResponse()
Add the user to the group. Records membership in the group in the
dataset/ETHPy150Open deldotdr/txRedis/txredis/client.py/RedisClient.execute--crossover with--dataset/ETHPy150Open girder/girder/girder/models/group.py/Group.addUser