* @param queryLog The query log to index
     * @return The SuggestIndexResponse
     */
    public SuggestIndexResponse indexFromQueryLog(final ContentIndexingContext ctx, final QueryLog queryLog) {
        return indexFromQueryLog(ctx, new QueryLog[] { queryLog });
    }

    /**
     * Indexes a single query log.
     *
     * @param index The index name

    }

    @Test
    public void test_indexFromEmptyQueryLogs() throws Exception {
        QueryLog[] queryLogs = new QueryLog[0];
        SuggestIndexResponse response = suggester.indexer().indexFromQueryLog(queryLogs);

        assertNotNull(response);
        assertEquals(0, response.getNumberOfInputDocs());
        assertFalse(response.hasError());
    }

    @Test
    @SuppressWarnings("unchecked")

```java
import org.codelibs.fess.suggest.index.contents.querylog.QueryLog;

// Add suggestions from search query logs
QueryLog queryLog = new QueryLog("user search query", "user123");
suggester.indexer().indexFromQueryLog(queryLog);
```

### Popular Words Analytics

```java
import org.codelibs.fess.suggest.request.popularwords.PopularWordsResponse;

PopularWordsResponse popularWords = suggester.popularWords()

        String field = settings.array().get(SuggestSettings.DefaultKeys.SUPPORTED_FIELDS)[0];

        QueryLog queryLog = new QueryLog(field + ":検索", null);
        SuggestIndexResponse response = suggester.indexer().indexFromQueryLog(queryLog);

        assertNotNull(response);
        assertEquals(1, response.getNumberOfInputDocs());
        assertFalse(response.hasError());
    }

    @Test

        SuggestSettings settings = suggester.settings();
        String field = settings.array().get(SuggestSettings.DefaultKeys.SUPPORTED_FIELDS)[0];

        SuggestIndexResponse indexResponse = suggester.indexer().indexFromQueryLog(new QueryLog(field + ":検索", null));
        assertEquals(1, indexResponse.getNumberOfInputDocs());
        assertEquals(1, indexResponse.getNumberOfSuggestDocs());
        assertFalse(indexResponse.hasError());