Auto-Dispose

AutoDispose is a very simple way to manage lifecycle objects. An auto-dispose object can be released on its own initiative or released when the managed object it follows is released.
The Context used in Effect and the EffectPart in HigherEffect are auto-dispose objects. So we can easily host custom objects that need to be managed for lifecycle management.
Sample Code

dart

class ItemWidgetBindingObserver extends WidgetsBindingObserver
    with AutoDispose {
  ItemWidgetBindingObserver() : super() {
    WidgetsBinding.instance.addObserver(this);
  }

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    if (AppConfig.flutterBinding.framesEnabled &&
        state == AppLifecycleState.resumed) {
      AppConfig.flutterBinding.performReassemble();
    }
  }

  @override
  void dispose() {
    super.dispose();
    WidgetsBinding.instance.removeObserver(this);
  }
}

void _init(Action action, Context<ItemPageContainerState> ctx) {
    final ItemWidgetBindingObserver observer = ItemWidgetBindingObserver();
    observer.follow(ctx);
}