docs: def hget(self, name, key):
          """
          Returns the value stored in the field, None if the field doesn't exist.
  
          :param name: str     the name of the redis key
          :param key: the member of the hash
          :return: Future()
          """
          with self.pipe as pipe:
              f = Future()
              res = pipe.hget(self.redis_key(name),
                              self.memberparse.encode(key))
  
              def cb():
                  f.set(self._value_decode(key, res.result))
  
              pipe.on_execute(cb)
              return f