You might be thinking of this package, authored by Google, mostly by people on the Flutter team but it's not an official Flutter project (as far as I know): htt

You might be thinking of this package, authored by Google, mostly by people on the Flutter team but it's not an official Flutter project (as far as I know): https://pub.dev/packages/flutter_simple_treeview https://pub.dev/packages/flutter_simple_treeview (Disclaimer: I work on the Flutter team.)