text: public List<Note> call() throws GitAPIException {checkCallable();List<Note> notes = new ArrayList<>();NoteMap map = NoteMap.newEmptyMap();try (RevWalk walk = new RevWalk(repo)) {Ref ref = repo.findRef(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.add(i.next());} catch (IOException e) {throw new JGitInternalException(e.getMessage(), e);}return notes;}