@Override
    public boolean equals(@Nullable VcsRef ref1, @Nullable VcsRef ref2) {
      if (ref1 == ref2) return true;
      return ref1 != null && ref2 != null && ref1.getName().equals(ref2.getName()) && ref1.getType().equals(ref2.getType());
    }
@Override
    public boolean equals(@Nullable VcsRef ref1, @Nullable VcsRef ref2)