docs: def names(self):
          """
          Returns a list of queues available, ``None`` if no such
          queues found. Remember this will only shows queues with
          at least one item enqueued.
          """
          data = None
          if not self.connected:
              raise ConnectionError('Queue is not connected')
  
          try:
              data = self.rdb.keys("retaskqueue-*")
          except redis.exceptions.ConnectionError as err:
              raise ConnectionError(str(err))
  
          return [name[12:] for name in data]