code: func (b *Backend) PurgeState(taskUUID string) error {
  	conn, channel, err := b.Open(b.GetConfig().Broker, b.GetConfig().TLSConfig)
  	if err != nil {
  		return err
  	}
  	defer b.Close(channel, conn)
  
  	return b.DeleteQueue(channel, taskUUID)
  }
docs: // PurgeState deletes stored task state