040000 tree 94289d7b9b87269e5c65c5e131affdb1e92d75bf	goodbye_dart
040000 tree 6996ba4e73377522d403ee48cd26a37e97e98d77	greeting
040000 tree 29ab0af1744a483c02877ebff53aea5e3b500893	hello_app_dart
040000 tree 313ad8ccd65e0c4bb6a7407d71308091bc6cc950	hello_dart