*   <li>{@link #getAllWordsNum()}: Returns the total number of words in the suggestion index.</li>
 *   <li>{@link #getDocumentWordsNum()}: Returns the number of document words in the suggestion index.</li>
 *   <li>{@link #getQueryWordsNum()}: Returns the number of query words in the suggestion index.</li>
 * </ul>
 *
 * <p>Protected Methods:
 * <ul>
 *   <li>{@link #createDefaultIndexer()}: Creates a default SuggestIndexer instance.</li>
 * </ul>

    }

    /**
     * Gets the number of words from queries in the suggest index.
     *
     * @return The number of query words.
     */
    public long getQueryWordsNum() {
        return suggester.getQueryWordsNum();
    }

    /**
     * Deletes all words from the suggest index.
     *
     * @return true if the operation was successful, false otherwise.
     */

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

    @Test
    public void test_getQueryWordsNum() {
        try {
            assertEquals(0L, suggestHelper.getQueryWordsNum());
        } catch (Exception e) {
            assertTrue(true);
        }
    }

    @Test
    public void test_deleteAllWords() {
        try {

        suggester.indexer().index(items);
        suggester.refresh();

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

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

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

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

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

    @Test
    public void test_deleteDocumentWords() throws Exception {

        final SuggestBody body = new SuggestBody();
        body.totalWordsNum = suggestHelper.getAllWordsNum();
        body.documentWordsNum = suggestHelper.getDocumentWordsNum();
        body.queryWordsNum = suggestHelper.getQueryWordsNum();
        return asJson(new ApiResult.ApiConfigResponse().setting(body).status(ApiResult.Status.OK).result());
    }

    /**
     * Deletes all suggest words from the system.
     *

        runtime.registerData("totalWordsNum", suggestHelper.getAllWordsNum());
        runtime.registerData("documentWordsNum", suggestHelper.getDocumentWordsNum());
        runtime.registerData("queryWordsNum", suggestHelper.getQueryWordsNum());
    }

    @Override
    protected String getActionRole() {
        return ROLE;
    }

    // ===================================================================================

        Suggester suggester = createSuggester();
        suggester.createIndexIfNothing();

        assertEquals("Empty index should have 0 query words", 0, suggester.getQueryWordsNum());
    }

    @Test
    public void test_settings_returnsNonNull() throws Exception {
        Suggester suggester = createSuggester();