code: func (e EventType) SubCommand() string {
  	switch e {
  	case PlainEvent:
  		return "SUBSCRIBE"
  	case PatternEvent:
  		return "PSUBSCRIBE"
  	default:
  		panic(fmt.Sprintf("redutil/pubsub: unknown event type %d", e))
  	}
  }
docs: // SubCommand returns the command issued to subscribe to the event in Redis.