Flutter widget life-cycle debug

class HomeScreenBody extends StatefulWidget {
const HomeScreenBody({Key key}) : super(key: key);
@override
_HomeScreenBodyState createState() => _HomeScreenBodyState();
}
class _HomeScreenBodyState extends State<HomeScreenBody> {
int value = 0;
@override
Widget build(BuildContext context) {
return Column(
children: <Widget>[
FlatButton(
onPressed: () async {
setState(() {
value++;
});
}