import 'package:flutter/material.dart';

class A extends StatelessWidget {
  const A(this.widget, {super.key});

  final Widget widget;

  @override
  Widget build(BuildContext context) => Container();
}

class B extends A {
  const B({Key? key}) : super(const Text(''), key: key);
}

  const B({super.key}) : super(const Text(''));

  MyWidget({Key? key}) : super(text: '', key: key);