*
     * @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));
    }

     */
    @Execute
    public HtmlResponse advance(final SearchForm form) {
        if (isLoginRequired()) {
            return redirectToLogin();
        }
        validate(form, messages -> {}, () -> asHtml(virtualHost(path_IndexJsp)).renderWith(data -> {
            buildInitParams();
            RenderDataUtil.register(data, "notification", fessConfig.getNotificationSearchTop());
        }));

        assertContentType("text/html", "html/test1.html", "hoge.html");
        assertContentType("text/html", "html/test1.html", "hoge.htm");
        assertContentType("text/html", "html/test1.shtml", "hoge.shtml");

        assertContentType("application/msword", "test/text1.txt", "hoge.doc");
        assertContentType("application/msword", "extractor/msoffice/test.doc", "hoge.doc");

     *
     * @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));
    }

     *
     * @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));
    }

     * @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 -> {
                buildFormParams(form);
            });
        }).renderWith(data -> {
            buildInitParams();

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

     */
    public static boolean isLogFilename(final String name) {
        return name.endsWith(".log") || name.endsWith(".log.gz");
    }

    private HtmlResponse asIndexHtml() {
        return asHtml(path_AdminLog_AdminLogJsp).renderWith(data -> {
            RenderDataUtil.register(data, "logFileItems", getLogFileItems());
        });
    }

     */
    @Execute
    public HtmlResponse index() {
        if (isLoginRequired()) {
            return redirectToLogin();
        }

        return asHtml(virtualHost(path_HelpJsp)).useForm(SearchForm.class, op -> {
            op.setup(form -> {
                buildFormParams(form);
            });
        }).renderWith(data -> {
            buildInitParams();

            break;
        }
        return OptionalEntity.empty();
    }

    private HtmlResponse asListHtml() {
        return asHtml(path_AdminSearchlist_AdminSearchlistJsp);
    }

    private HtmlResponse asEditHtml() {
        return asHtml(path_AdminSearchlist_AdminSearchlistEditJsp);
    }

    /**