How do I call method of child widget?

```
class Parent extends StatefulWidget {
  const Parent({Key? key}) : super(key: key);

  @override
  State<Parent> createState() => _ParentState();
}

class _ParentState extends State<Parent> {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        FloatingActionButton(onPressed: (){
          //call child function named funcToCallFromParent
        }),
        Child(),
      ],
    );
  }
}
class Child extends StatefulWidget {
  const Child({Key? key}) : super(key: key);

  @override
  State<Child> createState() => _ChildState();
}

class _ChildState extends State<Child> {

  void funcToCallFromParent(){
    print('child func called from parent');
  }

  @override
  Widget build(BuildContext context) {
    return Container();
  }
}

```