/**
     * Show the index page.
     * @param form The search form.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        validate(form, messages -> {}, this::asDictIndexHtml);
        kuromojiPager.clear();

     * Displays the initial duplicate host management page.
     *
     * @param form the search form
     * @return HTML response for the duplicate host list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        return asListHtml();
    }

    /**
     * Displays the duplicate host list with pagination.
     *

     * Displays the search list management index page.
     *
     * @param form the list form for filtering
     * @return HTML response for the search list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final ListForm form) {
        saveToken();
        validate(form, messages -> {}, () -> asHtml(path_AdminError_AdminErrorJsp));
        return asListHtml();
    }

    /**

    /**
     * Displays the user management index page.
     *
     * @return HTML response for the user list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {
        return asListHtml();
    }

    /**
     * Displays a paginated list of users.
     *
     * @param pageNumber the page number to display (optional)

     *
     * @param form the search form for filtering
     * @return HTML response for the web authentication list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        return asListHtml();
    }

    /**
     * Displays a paginated list of web authentication configurations.
     *

   * returned by {@link #row}. Those maps may support {@code setValue()}, {@code put()}, and {@code
   * putAll()}.
   *
   * @return a map view from each row key to a secondary map from column keys to values
   */
  Map<R, Map<C, V>> rowMap();

  /**
   * Returns a view that associates each column key with the corresponding map from row keys to

    /**
     * Displays the key match list page.
     *
     * @param form the search form
     * @return HTML response for the list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        return asListHtml();
    }

    /**
     * Displays the key match list with pagination.
     *
     * @param pageNumber the page number

     * Displays the scheduler management index page.
     *
     * @param form the search form for filtering
     * @return HTML response for the scheduler list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        return asListHtml();
    }

    /**
     * Displays a paginated list of scheduled jobs.
     *

            protected OptionalThing<SMailSubjectFilter> createSubjectFilter() {
                return OptionalThing.of((view, subject) -> subject);
            }

            @Override
            protected OptionalThing<SMailAsyncStrategy> createAsyncStrategy() {
                return OptionalThing.of((view, runnable) -> async(asyncManager, runnable));
            }

            @Override

    /** Line feed character for message formatting. */
    protected static final char LF = '\n';

    /**
     * Sends notifications to configured platforms.
     *
     * @param cardView the card view for the notification
     * @param discloser the mail posting discloser
     */
    public void send(final CardView cardView, final SMailPostingDiscloser discloser) {
        sendToSlack(cardView, discloser);