}, validationErrorLambda);
            return null;
        });
    }

    /**
     * Returns the index HTML response.
     *
     * @return the HTML response
     */
    protected HtmlResponse asIndexHtml() {
        return getUserBean().map(u -> asHtml(virtualHost(path_Profile_IndexJsp)).useForm(ProfileForm.class))
                .orElseGet(() -> redirect(LoginAction.class));
    }

    /**
     * Displays the general error page.
     *
     * @param form the error form containing error information
     * @return HTML response for the error page
     */
    @Execute
    public HtmlResponse index(final ErrorForm form) {
        return asHtml(virtualHost(path_Error_ErrorJsp));
    }

    /**
     * Displays the system error page.
     *
     * @param form the error form containing error information
     * @return HTML response for the system error page
     */
    @Execute
    public HtmlResponse index(final ErrorForm form) {
        return asHtml(virtualHost(path_Error_SystemJsp));
    }

     *
     * @param form the edit form containing updated settings
     * @return HTML response after updating settings
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse update(final EditForm form) {
        validate(form, messages -> {}, () -> asHtml(path_AdminGeneral_AdminGeneralJsp));
        verifyToken(() -> asHtml(path_AdminGeneral_AdminGeneralJsp));

        updateConfig(fessConfig, form);

    /**
     * Returns the appropriate HTML response for login handling.
     * If a user is already authenticated, redirects to the appropriate admin interface.
     * Otherwise, displays the login page.
     *
     * @return HTML response for login page or redirect to admin interface
     */
    protected HtmlResponse getHtmlResponse() {
        return getUserBean().map(this::redirectByUser).orElse(asHtml(virtualHost(path_Login_IndexJsp)));
    }

    /**
     * Displays the bad request error page.
     *
     * @param form the error form containing error information
     * @return HTML response for the bad request error page
     */
    @Execute
    public HtmlResponse index(final ErrorForm form) {
        return asHtml(virtualHost(path_Error_BadRequestJsp));
    }

    /**
     * The index page.
     * @return The HTML response for the index page.
     */
    @Execute
    public HtmlResponse index() {
        if (isLoginRequired()) {
            return redirectToLogin();
        }

        return asHtml(virtualHost(path_IndexJsp)).useForm(SearchForm.class, op -> {
            op.setup(form -> {

    //                                                                      ==============
    /**
     * Show the index page.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse index() {
        searchEngineApiManager.saveToken();
        return asHtml(path_AdminDashboard_AdminDashboardJsp).renderWith(data -> {

        default:
            break;
        }
        return null;
    }

    /**
     * Creates an HTML response for the list page with optional pre-processing.
     *
     * @param runnable optional runnable to execute before rendering (can be null)
     * @return HTML response for the search request list page
     */
    private HtmlResponse asListHtml(final Runnable runnable) {

    /**
     * Displays the not found error page.
     *
     * @param form the error form containing error information
     * @return HTML response for the not found error page
     */
    @Execute
    public HtmlResponse index(final ErrorForm form) {
        return asHtml(virtualHost(path_Error_NotFoundJsp));
    }