/** The key of the message: {item} may not be null. */
    public static final String CONSTRAINTS_NotNull_MESSAGE = "{constraints.NotNull.message}";

    /** The key of the message: {item} must be null. */
    public static final String CONSTRAINTS_Null_MESSAGE = "{constraints.Null.message}";

    /** The key of the message: {item} must be in the past. */

    // Empty server to client message.
    val message3 = ""
    server.send(message3)
    clientListener.assertTextMessage(message3)

    // Empty client to server message.
    val message4 = ""
    client.send(message4)
    serverListener.assertTextMessage(message4)

    // Server to client message that shares context with message1.
    val message5 = message1 + message1

          // Produced ClientHello handshake message
          // Consuming ServerHello handshake message
          // Consuming server Certificate handshake message
          // Consuming server CertificateStatus handshake message
          // Found trusted certificate
          // Consuming ECDH ServerKeyExchange handshake message
          // Consuming ServerHelloDone handshake message

    /** The key of the message: Status */
    public static final String LABELS_AVAILABLE = "{labels.available}";

    /** The key of the message: Created by */
    public static final String LABELS_CREATED_BY = "{labels.createdBy}";

    /** The key of the message: Created Time */
    public static final String LABELS_CREATED_TIME = "{labels.createdTime}";

    /** The key of the message: Depth */

          message.startsWith("System property ") -> Type.Setup
          message.startsWith("Reload ") -> Type.Setup
          message == "No session to resume." -> Type.Handshake
          message.startsWith("Consuming ") -> Type.Handshake
          message.startsWith("Produced ") -> Type.Handshake
          message.startsWith("Negotiated ") -> Type.Handshake

        return args;
    }

    @Override
    public String getMessage() {
        return message;
    }

    /**
     * Returns a simple message without a message code.
     *
     * @return simple message without message code
     */
    public final String getSimpleMessage() {
        return simpleMessage;
    }

type fatalMsg struct{}

func (f fatalMsg) json(msg string, args ...interface{}) {
	var message string
	if msg != "" {
		message = fmt.Sprintf(msg, args...)
	} else {
		message = fmt.Sprint(args...)
	}
	logJSON, err := json.Marshal(&log.Entry{
		Level:   FatalKind,
		Message: message,
		Time:    time.Now().UTC(),
		Trace:   &log.Trace{Message: message, Source: []string{getSource(6)}},
	})
	if err != nil {
		panic(err)
	}

	v, ok := c.inStream.Load(m.MuxID)
	if !ok {
		if debugPrint {
			fmt.Println(c.Local, "OpMuxClientMsg: Unknown Mux:", m.MuxID)
		}
		gridLogIf(ctx, c.queueMsg(message{Op: OpDisconnectClientMux, MuxID: m.MuxID}, nil))
		PutByteBuffer(m.Payload)
		return
	}
	v.message(m)
}

func (c *Connection) handleResponse(m message) {
	if debugPrint {

        this.messageCode = messageCode;
    }

    public SsoMessageException(final VaMessenger<FessMessages> messageCode, final String message) {
        super(message);
        this.messageCode = messageCode;
    }

    /**
     * @return the messageCode
     */
    public VaMessenger<FessMessages> getMessageCode() {
        return messageCode;
    }

   * that enqueued messages were not transmitted.
   */
  fun queueSize(): Long

  /**
   * Attempts to enqueue `text` to be UTF-8 encoded and sent as a the data of a text (type `0x1`)
   * message.
   *
   * This method returns true if the message was enqueued. Messages that would overflow the outgoing
   * message buffer will be rejected and trigger a [graceful shutdown][close] of this web socket.