final SuggestResponse response = suggester.suggest().setQuery("。").setSuggestDetail(true).execute().getResponse();
        assertEquals(0, response.getNum());
    }

    @Test
    public void test_indexElevateWord() throws Exception {
        ElevateWord elevateWord =
                new ElevateWord("Test", 2.0f, Collections.singletonList("Test"), Collections.singletonList("content"), null, null);