docs: int[] getValue() {
      int maxConfidence = -1;
      Collection<Integer> result = new ArrayList<>();
      for (Entry<Integer,Integer> entry : values.entrySet()) {
        if (entry.getValue() > maxConfidence) {
          maxConfidence = entry.getValue();
          result.clear();
          result.add(entry.getKey());
        } else if (entry.getValue() == maxConfidence) {
          result.add(entry.getKey());
        }
      }
      return PDF417Common.toIntArray(result);
    }