* Deletes all suggest words from the suggest index.
     *
     * @return HTML response redirecting to the index page
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse deleteAllWords() {
        if (!suggestHelper.deleteAllWords()) {
            throwValidationError(messages -> messages.addErrorsFailedToDeleteDocInAdmin(GLOBAL),
                    () -> asHtml(path_AdminSuggest_AdminSuggestJsp).useForm(SuggestForm.class));

     *
     * @return JSON response indicating success or failure
     */
    // DELETE /api/admin/suggest/all
    @Execute
    public JsonResponse<ApiResult> delete$all() {
        if (!suggestHelper.deleteAllWords()) {
            throwValidationErrorApi(messages -> messages.addErrorsFailedToDeleteDocInAdmin(GLOBAL));
        }
        return asJson(new ApiResult.ApiResponse().status(ApiResult.Status.OK).result());
    }

    }

    /**
     * Deletes all words from the suggest index.
     *
     * @return true if the operation was successful, false otherwise.
     */
    public boolean deleteAllWords() {
        final SuggestDeleteResponse response = suggester.indexer().deleteAll();
        if (response.hasError()) {
            logger.warn("Failed to delete all words.", response.getErrors().get(0));

        } catch (Exception e) {
            assertTrue(true);
        }
    }

    public void test_deleteAllWords() {
        try {
            assertFalse(suggestHelper.deleteAllWords());
        } catch (Exception e) {
            assertTrue(true);
        }
    }

    public void test_deleteDocumentWords() {
        try {