code: func (b *Backend) TriggerChord(groupUUID string) (bool, error) {
  	conn, channel, err := b.Open(b.GetConfig().Broker, b.GetConfig().TLSConfig)
  	if err != nil {
  		return false, err
  	}
  	defer b.Close(channel, conn)
  
  	_, err = b.InspectQueue(channel, amqmChordTriggeredQueue(groupUUID))
  	if err != nil {
  		return true, nil
  	}
  
  	return false, nil
  }
docs: // TriggerChord flags chord as triggered in the backend storage to make sure
  // chord is never trigerred multiple times. Returns a boolean flag to indicate
  // whether the worker should trigger chord (true) or no if it has been triggered
  // already (false)