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))));
    }

     *
     * @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.)
     */
    public ExtractException(final Throwable cause) {
        super(cause);
    }

    /**
     * Constructs a new ExtractException with the specified detail message,

    /**
     * Constructs a new exception with the specified detail message and cause.
     *
     * @param message the detail message
     * @param cause the cause (which is saved for later retrieval by the {@link Throwable#getCause()} method)
     */
    public ExecutionTimeoutException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**

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

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

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

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

    }

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

    /**
     * Constructs a runtime CIFS exception with the specified detail message.
     *

    }

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

    /**
     * Constructs a CIFS unsupported crypto exception with the specified detail message.

    }

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

    /**
     * Creates a new SMBProtocolDowngradeException with the specified detail message.

        Throwable cause = new IllegalArgumentException("Cause exception");
        FessSystemException exception = new FessSystemException(cause);

        assertEquals(cause, exception.getCause());
        // When constructed with cause only, message contains the cause's toString()
        assertTrue(exception.getMessage().contains(cause.getClass().getName()));
        assertTrue(exception.getMessage().contains("Cause exception"));

        parameters = "";
        parameterMap = ParameterUtil.parse(parameters);
        assertEquals(0, parameterMap.size());

        parameters = "domain";
        parameterMap = ParameterUtil.parse(parameters);
        assertEquals(1, parameterMap.size());
        assertEquals("", parameterMap.get("domain"));

        parameters = "domain=";
        parameterMap = ParameterUtil.parse(parameters);
        assertEquals(1, parameterMap.size());