<button type="button" class="btn btn-danger btn-xs"
                                                                name="deleteDocumentWords"
                                                                data-toggle="modal"
                                                                data-target="#confirmToDocumentDelete"

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

        return response;
    }

    /**
     * Deletes document words.
     * @return The SuggestDeleteResponse.
     */
    public SuggestDeleteResponse deleteDocumentWords() {
        ensureOperations();
        return deletionOps.deleteDocumentWords(index);
    }

    /**
     * Deletes query words.
     * @return The SuggestDeleteResponse.
     */
    public SuggestDeleteResponse deleteQueryWords() {

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

        assertEquals(1, suggester.getDocumentWordsNum());
        assertEquals(1, suggester.getQueryWordsNum());

        SuggestDeleteResponse deleteResponse = suggester.indexer().deleteDocumentWords();

        assertNotNull(deleteResponse);
        assertFalse(deleteResponse.hasError());

        suggester.refresh();
        assertEquals(1, suggester.getAllWordsNum());

     *
     * @param index The index name
     * @return The SuggestDeleteResponse
     */
    public SuggestDeleteResponse deleteDocumentWords(final String index) {
        if (logger.isInfoEnabled()) {
            logger.info("Deleting document words: index={}", index);
        }

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

    @Test
    public void test_deleteDocumentWords() {
        try {
            assertFalse(suggestHelper.deleteDocumentWords());
        } catch (Exception e) {
            assertTrue(true);
        }
    }

    @Test
    public void test_deleteQueryWords() {
        try {

        assertFalse(response.hasError());
    }

    @Test
    public void test_deleteDocumentWordsOnEmptyIndex() throws Exception {
        SuggestDeleteResponse response = suggester.indexer().deleteDocumentWords();

        assertNotNull(response);
        assertFalse(response.hasError());
    }

    @Test
    public void test_deleteQueryWordsOnEmptyIndex() throws Exception {

        assertEquals(2, suggester.getAllWordsNum());
        assertEquals(2, suggester.getDocumentWordsNum());
        assertEquals(1, suggester.getQueryWordsNum());

        suggester.indexer().deleteDocumentWords();
        suggester.refresh();
        assertEquals(1, suggester.getAllWordsNum());
        assertEquals(0, suggester.getDocumentWordsNum());
        assertEquals(1, suggester.getQueryWordsNum());
    }

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