widgetFromRegistration method
Implementation
Widget? widgetFromRegistration(BuildContext context, [Widget Function(dynamic child)? templateChild]) {
if (this is RegionWidgetRegistration) return registration(context) as Widget;
final child = registration(context);
if (child is! Widget && templateChild == null) return null;
return (child is Widget || templateChild == null) ? child as Widget : templateChild(child);
}