AsyncReactiveWidgetBuilder typedef
AsyncReactiveWidgetBuilder =
Future<WidgetBuilder> Function(Watcher watch, OtherType read<OtherType>(Reactive<OtherType> reactive) )
Implementation
typedef AsyncReactiveWidgetBuilder = Future<WidgetBuilder> Function(Watcher watch, OtherType Function<OtherType>(Reactive<OtherType> reactive) read);