void testWithCause() {
        // Given
        IllegalArgumentException cause = new IllegalArgumentException("bad arg");

        // When
        SpnegoException ex = new SpnegoException(cause);

        // Then
        assertNotNull(ex);
        assertEquals(cause, ex.getCause());
        // IOException(Throwable) sets message to cause.toString()

        // Test constructor with message and cause
        String message = "Test scheduled job error with cause";
        Throwable cause = new RuntimeException("Root cause exception");
        ScheduledJobException exception = new ScheduledJobException(message, cause);

        assertEquals(message, exception.getMessage());
        assertEquals(cause, exception.getCause());
        assertEquals("Root cause exception", exception.getCause().getMessage());

    /**
     * Constructs a new FessSystemException with the specified detail message and cause.
     *
     * @param message the detail message describing the exception
     * @param cause the cause of this exception
     */
    public FessSystemException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new FessSystemException with the specified detail message.

      @Nullable K key, @Nullable V value, RemovalCause cause) {
    return new RemovalNotification<>(key, value, cause);
  }

  private RemovalNotification(@Nullable K key, @Nullable V value, RemovalCause cause) {
    super(key, value);
    this.cause = checkNotNull(cause);
  }

  /** Returns the cause for which the entry was removed. */
  public RemovalCause getCause() {
    return cause;
  }

  /**

     * Constructs a new CurlException with the specified detail message and cause.
     *
     * @param message the detail message (which is saved for later retrieval by the {@link #getMessage()} method).
     * @param cause the cause (which is saved for later retrieval by the {@link #getCause()} method).
     *              (A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.)
     */

        return OptionalThing.of(asJson(createFailureBean(Status.BAD_REQUEST, createMessage(resource, cause))));
    }

    @Override
    public OptionalThing<ApiResponse> handleServerException(final ApiFailureResource resource, final Throwable cause) {
        return OptionalThing.of(asJson(createFailureBean(Status.SYSTEM_ERROR, createMessage(resource, cause))));
    }

    }

    @Test
    public void test_toStringMethodWithCause() {
        // Test toString method behavior with cause
        String message = "Plugin error with cause";
        Throwable cause = new RuntimeException("Root cause");
        PluginException exception = new PluginException(message, cause);

        String toStringResult = exception.toString();
        assertNotNull(toStringResult);

        // Test constructor with message and cause
        String message = "Script execution failed";
        Exception cause = new RuntimeException("Underlying error");
        ScriptEngineException exception = new ScriptEngineException(message, cause);

        assertEquals(message, exception.getMessage());
        assertEquals(cause, exception.getCause());

     * Creates a {@link ClassNotFoundRuntimeException}.
     *
     * @param cause the underlying exception
     */
    public ClassNotFoundRuntimeException(final ClassNotFoundException cause) {
        this(null, cause);
    }

    /**
     * Creates a {@link ClassNotFoundRuntimeException}.
     *
     * @param className the class name
     * @param cause the underlying exception
     */

        // Test constructor with message and cause
        String message = "SSO authentication error";
        Exception cause = new RuntimeException("Token validation failed");
        SsoLoginException exception = new SsoLoginException(message, cause);

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