private void addAll(FilesDelta other) {
    other.lockData();
    try {
      myDeletedPaths.addAll(other.myDeletedPaths);
      for (Map.Entry<BuildRootDescriptor, Set<File>> entry : other.myFilesToRecompile.entrySet()) {
        _addToRecompiled(entry.getKey(), entry.getValue());
      }
    }
    finally {
      other.unlockData();
    }
  }
private void addAll(FilesDelta other)