}
        return redirect(getClass());
    }

    /**
     * Reloads the document index by closing and reopening it.
     *
     * @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) {

     * Only configured label values are accepted to prevent query injection.
     *
     * @param request the HTTP request
     * @return a map of field names to their validated filter values
     */
    protected Map<String, String[]> parseFieldFilters(final HttpServletRequest request) {
        final Map<String, String[]> fields = new HashMap<>();