@Test
    public void test_promiseChaining_returnsSamePromise() throws Exception {
        final Deferred<SuggestResponse> deferred = new Deferred<>();

        Deferred<SuggestResponse>.Promise promise1 = deferred.promise();
        Deferred<SuggestResponse>.Promise promise2 = promise1.then(response -> {});
        Deferred<SuggestResponse>.Promise promise3 = promise2.error(error -> {});

        // All should be the same promise instance

        suggester.refresh();

        SuggestResponse response1 = suggester.suggest().setQuery("tes").setSuggestDetail(true).execute().getResponse();
        assertEquals(1, response1.getNum());
        SuggestResponse response2 = suggester.suggest().setQuery("hoge").setSuggestDetail(true).execute().getResponse();
        assertEquals(1, response2.getNum());

    }

    /**
     * Creates a SuggestResponse from the OpenSearch SearchResponse.
     * @param searchResponse The OpenSearch SearchResponse.
     * @return A SuggestResponse instance.
     * @deprecated Use {@link SuggestResponseCreator#createResponse(SearchResponse)} instead.
     */
    @Deprecated
    protected SuggestResponse createResponse(final SearchResponse searchResponse) {

);

suggester.indexer().index(item);
```

#### 3. Get Suggestions

```java
import org.codelibs.fess.suggest.request.suggest.SuggestResponse;

// Synchronous suggestion request
SuggestResponse response = suggester.suggest()
    .setQuery("sea")                    // user input
    .setSize(10)                        // max suggestions
    .execute()
    .getResponse();