}

    @Test
    public void test_multiLevelExceptionChain() {
        // Test multi-level exception chain
        Throwable level3 = new NullPointerException("Null value");
        Throwable level2 = new IllegalStateException("Invalid state", level3);
        Throwable level1 = new RuntimeException("Runtime error", level2);
        PluginException exception = new PluginException("Plugin failure", level1);

        assertTrue(exception.getCause().getStackTrace().length > 0);
    }

    @Test
    public void test_multiLevelCause() {
        // Test with nested exceptions
        Throwable rootCause = new IllegalStateException("Root problem");
        Throwable intermediateCause = new RuntimeException("Intermediate problem", rootCause);
        GsaConfigException exception = new GsaConfigException("Top level GSA error", intermediateCause);

        assertEquals(message, exception.getMessage());
        Throwable cause1 = exception.getCause();
        assertTrue(cause1 instanceof RuntimeException);

        Throwable cause2 = cause1.getCause();
        assertTrue(cause2 instanceof AssertionError);

        Throwable cause3 = cause2.getCause();
        assertTrue(cause3 instanceof IllegalStateException);
    }

    }

    @Test
    public void test_nestedExceptionChain() {
        // Test nested exception chain
        Throwable rootCause = new IllegalArgumentException("Root cause");
        Throwable middleCause = new IllegalStateException("Middle cause", rootCause);
        ScheduledJobException exception = new ScheduledJobException("Top level error", middleCause);

        private final String throwable;

        /**
         * Constructs a new LogNotificationEvent.
         *
         * @param timestamp the event timestamp in milliseconds
         * @param level the log level name
         * @param loggerName the logger name
         * @param message the log message
         * @param throwable the throwable string, or null
         */

    }

    @Test
    public void test_constructor_withNestedCause() {
        // Test constructor with nested exception causes
        Throwable rootCause = new IllegalArgumentException("Root cause");
        Throwable middleCause = new IllegalStateException("Middle cause", rootCause);
        String message = "Command execution failed with nested exception";

        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withNestedCause() {
        // Test constructor with nested exceptions
        Throwable rootCause = new IllegalStateException("Root cause");
        Throwable intermediateCause = new RuntimeException("Intermediate cause", rootCause);
        String message = "Top level error";

        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withNullCause() {
        // Test with null cause
        DataStoreException exception = new DataStoreException((Throwable) null);

        assertNotNull(exception);
        assertNull(exception.getCause());
        assertNull(exception.getMessage());
    }

    @Test
    public void test_constructor_withNullMessageAndCause() {

    }

    @Test
    public void test_constructor_withMessageAndCause() {
        // Test constructor with message and cause
        String message = "Test exception message with cause";
        Throwable cause = new RuntimeException("Root cause");
        FessSystemException exception = new FessSystemException(message, cause);

        assertEquals(message, exception.getMessage());

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

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