class State<T extends StatefulWidget> {}

class StatefulWidget {}

mixin MyMixin<T, W extends StatefulWidget> on State<W> {
  void listenToEvents(Stream<MyModel<T>> stream) {}
}

class MyModel<T> {
  MyModel(this.data);
  final T data;
}

typedef MyMixinTypedef = MyMixin<String, MyWidget>;

class MyWidget extends StatefulWidget {}

class MyWidgetState1 extends State<MyWidget> with MyMixin<String, MyWidget> {
  void doSomething() {}
}

class MyWidgetState2 extends State<MyWidget> with MyMixinTypedef {
  void doSomething() {}
}