text: public override IList<Note> Call(){CheckCallable();IList<Note> notes = new AList<Note>();RevWalk walk = new RevWalk(repo);NoteMap map = NoteMap.NewEmptyMap();try{Ref @ref = repo.GetRef(notesRef);if (@ref != null){RevCommit notesCommit = walk.ParseCommit(@ref.GetObjectId());map = NoteMap.Read(walk.GetObjectReader(), notesCommit);}Iterator<Note> i = map.Iterator();while (i.HasNext()){notes.AddItem(i.Next());}}catch (IOException e){throw new JGitInternalException(e.Message, e);}finally{walk.Release();}return notes;}