docs: def move(self, key, db):
          """Move key from the currently selected database (see
          :meth:`~tredis.RedisClient.select`) to the specified destination
          database. When key already exists in the destination database, or it
          does not exist in the source database, it does nothing. It is possible
          to use :meth:`~tredis.RedisClient.move` as a locking primitive because
          of this.
  
          .. note::
  
             **Time complexity**: ``O(1)``
  
          :param key: The key to move
          :type key: :class:`str`, :class:`bytes`
          :param int db: The database number
          :rtype: bool
          :raises: :exc:`~tredis.exceptions.RedisError`
  
          """
          return self._execute([b'MOVE', key, ascii(db).encode('ascii')], 1)