*
     * @param form the delete form containing document ID
     * @return HTML response redirecting to the list page
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse delete(final DeleteForm form) {
        validate(form, messages -> {}, this::asListHtml);
        verifyToken(this::asListHtml);
        final String docId = form.docId;
        try {