private void setCachedValues(int deltaUpToRoot, boolean allDeltaUpToRootAreNull, int modCount) {
      cachedDeltaUpToRoot = packValues(deltaUpToRoot, allDeltaUpToRootAreNull, modCount);
    }
private void setCachedValues(int deltaUpToRoot, boolean allDeltaUpToRootAreNull, int modCount)