}

    @ParameterizedTest(name = "Message-only ctor preserves message: [{0}]")
    @MethodSource("messages")
    void messageConstructor_setsMessageAndNullCause(String message) {
        // Arrange & Act
        SMBProtocolDowngradeException ex = new SMBProtocolDowngradeException(message);

        // Assert - message preserved, cause null
        assertEquals(message, ex.getMessage());
        assertNull(ex.getCause());

                messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY);
        final VaMessenger<FessMessages> parseErrorCode =
                messages -> messages.addErrorsInvalidQueryParseError(UserMessages.GLOBAL_PROPERTY_KEY);

        // Execute
        final InvalidQueryException unknownException = new InvalidQueryException(unknownErrorCode, message);

        messages.add(message);
    }

    @Override
    public String toString() {
        return render("");
    }

    public String render(String indentation) {
        if (messages.isEmpty()) {
            return indentation + "There were no validation errors.";
        }

        StringBuilder message = new StringBuilder();
        for (int i = 0; i < messages.size(); i++) {

        messages.add(LlmMessage.assistant(content));
        return this;
    }

    /**
     * Gets the messages in this request.
     *
     * @return the list of messages
     */
    public List<LlmMessage> getMessages() {
        return messages;
    }

    /**
     * Sets the messages in this request.
     *
     * @param messages the list of messages
     */

    public void test_differentMessageCodes() {
        // Setup - test with different message codes
        final String message = "Test message";
        final VaMessenger<FessMessages> loginErrorCode = messages -> messages.addErrorsSsoLoginError(UserMessages.GLOBAL_PROPERTY_KEY);
        final VaMessenger<FessMessages> logoutErrorCode = messages -> messages.addSuccessSsoLogout(UserMessages.GLOBAL_PROPERTY_KEY);

        // Execute

 *    either peer may not have been transmitted to the other.
 *
 * Note that the state progression is independent for each peer. Arriving at a gracefully-closed
 * state indicates that a peer has sent all of its outgoing messages and received all of its
 * incoming messages. But it does not guarantee that the other peer will successfully receive all of
 * its incoming messages.
 *
 * ## Message Queue

     *            Simple message with arguments expanded
     * @return Message with message code
     */
    public static String getFormattedMessage(final String messageCode, final String simpleMessage) {
        return "[" + messageCode + "]" + simpleMessage;
    }

    /**
     * Expands arguments and returns a simple message without a message code.
     *
     * @param messageCode
     *            Message code
     * @param args

     * @param validationMessagesLambda lambda function that adds validation messages
     * @return concatenated string of localized validation messages separated by spaces
     */
    protected String getMessage(final VaMessenger<FessMessages> validationMessagesLambda) {
        final FessMessages messages = new FessMessages();
        validationMessagesLambda.message(messages);

     * @param content the message content
     */
    public LlmMessage(final String role, final String content) {
        this.role = role;
        this.content = content;
    }

    /**
     * Creates a system message with the specified content.
     *
     * @param content the message content
     * @return a new system message
     */
    public static LlmMessage system(final String content) {

 * This validator provides validation functionality for Fess web actions with custom
 * message handling and runtime group validation.
 *
 * @param <MESSAGES> the type of user messages used by this validator
 */
public class FessActionValidator<MESSAGES extends UserMessages> extends ActionValidator<MESSAGES> {

    /**
     * Constructs a new FessActionValidator with the specified components.
     *