}
        return client;
    }

    // RAG workflow delegation methods

    /**
     * Detects the intent of a user message using the configured LLM client.
     *
     * @param userMessage the user's message
     * @return the detected intent with extracted keywords
     * @throws LlmException if LLM is not available
     */

        // Create a very long exception message
        StringBuilder longMessage = new StringBuilder("Error: ");
        for (int i = 0; i < 100; i++) {
            longMessage.append("This is a very long error message part ").append(i).append(". ");
        }
        final String errorMessage = longMessage.toString();

        // Create mock SearchEngineClient that throws exception with long message

        // Test constructor with message only
        String message = "SSO authentication failed";
        SsoProcessException exception = new SsoProcessException(message);

        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withMessageAndCause() {
        // Test constructor with message and Exception cause

    }

    @Test
    public void test_constructor_withSpecialCharactersInMessage() {
        // Test constructor with special characters in message
        final String message = "Job failed with special chars: \n\t\r\"'<>&";
        final JobProcessingException exception = new JobProcessingException(message);

        assertNotNull(exception);
        assertEquals(message, exception.getMessage());

        // Test constructor with message only
        String message = "Test exception message";
        FessSystemException exception = new FessSystemException(message);

        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withMessageAndCause() {
        // Test constructor with message and cause

    /** The unique identifier for this message. */
    private String id;

    /** The role of the message sender (user or assistant). */
    private String role;

    /** The content of the message. */
    private String content;

    /** The timestamp when the message was created. */
    private LocalDateTime timestamp;

    /** The list of sources referenced in this message. */
    private List<ChatSource> sources;

    /** The role of the message sender. */
    private String role;

    /** The content of the message. */
    private String content;

    /**
     * Default constructor.
     */
    public LlmMessage() {
    }

    /**
     * Creates a new message with the specified role and content.
     *
     * @param role the message role
     * @param content the message content
     */

    /**
     * Creates a new exception with the specified message.
     *
     * @param message the error message
     */
    public LlmException(final String message) {
        super(message);
        errorCode = ERROR_UNKNOWN;
    }

    /**
     * Creates a new exception with the specified message and cause.
     *
     * @param message the error message
     * @param cause the cause of the exception
     */

@Retention(RUNTIME)
@Documented
@Constraint(validatedBy = CronExpressionValidator.class)
public @interface CronExpression {

    /**
     * The error message when validation fails.
     * @return the error message
     */
    String message() default "{org.lastaflute.validator.constraints.CronExpression.message}";

    /**
     * The validation groups this constraint belongs to.
     * @return the groups
     */

.message-content p {
    margin: 0.5rem 0;
}

.message-content p:first-child {
    margin-top: 0;
}

.message-content p:last-child {
    margin-bottom: 0;
}

/* Headings in messages */
.message-content h1, .message-content h2, .message-content h3,
.message-content h4, .message-content h5, .message-content h6 {
    margin: 0.75rem 0 0.375rem; font-weight: 600; line-height: 1.3; color: #172b4d;
}