return new SuggestDeleteResponse(null, System.currentTimeMillis() - start);
    }

    public SuggestIndexResponse indexFromQueryLog(final QueryLog queryLog) {
        return indexFromQueryLog(new QueryLog[] { queryLog });
    }

    public SuggestIndexResponse indexFromQueryLog(final QueryLog[] queryLogs) {
        if (logger.isInfoEnabled()) {
            logger.info("Index from querylog. num: {}", queryLogs.length);

        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());