</div>
                            <div class="card-footer">
                                <button type="submit" class="btn btn-primary"
                                        name="reloadDocIndex"
                                        value="<la:message key="labels.reload_doc_index_button"/>">
                                    <i class="fa fa-sync" aria-hidden="true"></i>

     * @param form the action form (validated but not used for configuration)
     * @return HTML response redirecting to the maintenance page
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse reloadDocIndex(final ActionForm form) {
        validate(form, messages -> {}, this::asIndexHtml);
        verifyToken(this::asIndexHtml);
        searchEngineClient.flushConfigFiles(() -> {