index = (index + 1) & mask;
      }
      // Check to see if we wrapped around the whole table.
    } while (index != startingIndex);
    return false;
  }

  @Override
  void setBits(BitSet table) {
    if (containsZero) {
      table.set(0);
    }
    for (char c : this.table) {
      if (c != 0) {
        table.set(c);
      }
    }
  }

                .execute()
                .actionGet()
                .getHits()
                .getTotalHits()
                .value() > 0);
        assertTrue(fesenClient.prepareSearch("fess_crawler.queue")
                .setQuery(QueryBuilders.termQuery("sessionId", "id2"))
                .execute()
                .actionGet()
                .getHits()
                .getTotalHits()
                .value() > 0);

     * @return A PopularWordsResponse instance.
     */
    protected PopularWordsResponse createResponse(final SearchResponse searchResponse) {
        final SearchHit[] hits = searchResponse.getHits().getHits();
        final List<String> words = new ArrayList<>();
        final List<SuggestItem> items = new ArrayList<>();

        final String index;
        if (hits.length > 0) {

                .setSize(fessConfig.getPageScoreBoosterMaxFetchSizeAsInteger())
                .execute()
                .actionGet(requestTimeout);
        return Arrays.stream(response.getHits().getHits()).map(SearchHit::getId).toArray(n -> new String[n]);
    };

    /**
     * A function to handle requests.
     */
    protected Function<Map<String, Object>, Long> requestHandler = params -> {