code: func generateConsumerInstanceID() (string, error) {
  	uuid, err := generateUUID()
  	if err != nil {
  		return "", err
  	}
  
  	hostname, err := os.Hostname()
  	if err != nil {
  		return "", err
  	}
  
  	return fmt.Sprintf("%s:%s", hostname, uuid), nil
  }
docs: // generateConsumerInstanceID generates a consumergroup Instance ID
  // that is almost certain to be unique.