private void triggerOnInvertedIndexChangeCallback(short newData, short oldData) {
      if (oldData != newData) {
        if (oldData != 0) {
          myInvertedIndexChangeCallback.accept(oldData);
        }
        if (newData != 0) {
          myInvertedIndexChangeCallback.accept(newData);
        }
      }
    }
private void triggerOnInvertedIndexChangeCallback(short newData, short oldData)