code: func (conn *Conn) Away(message ...string) {
  	msg := strings.Join(message, " ")
  	if msg != "" {
  		msg = " :" + msg
  	}
  	conn.Raw(AWAY + msg)
  }
docs: // Away sends an AWAY command to the server.
  // If a message is provided it sets the client's away status with that message,
  // otherwise it resets the client's away status.
  //     AWAY
  //     AWAY :message