docs: public static HandshakeMessage getDefaultMessage() {
      HandshakeMessage message = new HandshakeMessage();
      message.setProtocolString(HandshakeMessage.PROTOCOL_STRING);
      message.setReservedBits(HandshakeMessage.PROTOCOL_RESERVED_BITS);
      message.setStringLength(HandshakeMessage.PROTOCOL_STRING_LENGTH);
      message.setVersionNumber(HandshakeMessage.PROTOCOL_VERSION);
      return message;
    }