createRoute method
Creates the Route that corresponds to this page.
The created Route must have its Route.settings property set to this Page.
Implementation
@override
Route<T> createRoute(BuildContext context) {
final Route<T> route = _createRoute(context);
return route
..popped.then((T? value) {
if (!isCompleted) {
_popCompleter.complete(value);
}
});
}