@Override
    public boolean isEqual(@Nullable LightFilePath path1, @Nullable LightFilePath path2) {
      if (path1 == null || path2 == null) {
        return path1 == path2;
      }
      return myRootsReversed.getInt(path1.getRoot()) == myRootsReversed.getInt(path2.getRoot()) &&
             path1.getRelativePath().equals(path2.getRelativePath());
    }
@Override
    public boolean isEqual(@Nullable LightFilePath path1, @Nullable LightFilePath path2)