docs: private List<Match> expandWithIgnoreItem(int docId, Match match) {
      List<Match> list = new ArrayList<>();
      try {
        Set<Integer> ignoreList = ignoreItem.getFullEndPositionList(docId,
            match.endPosition);
        if (ignoreList != null) {
          for (Integer endPosition : ignoreList) {
            list.add(new Match(match.startPosition, endPosition));
          }
        }
      } catch (IOException e) {
        log.debug(e);
      }
      return list;
    }