/// <exception cref="NGit.Errors.MissingObjectException"></exception>
/// <exception cref="System.IO.IOException"></exception>
private void CreateVerifyOpenPack(ICollection <ObjectId> interestings, ICollection
<ObjectId> uninterestings, bool thin, bool ignoreMissingUninteresting)
{
NullProgressMonitor m = NullProgressMonitor.INSTANCE;
writer = new PackWriter(config, db.NewObjectReader());
writer.SetThin(thin);
writer.SetIgnoreMissingUninteresting(ignoreMissingUninteresting);
writer.PreparePack(m, interestings, uninterestings);
writer.WritePack(m, m, os);
writer.Release();
VerifyOpenPack(thin);
}