create method
create the widget given a WidgetData type
data the widget data
environment the current Environment
context the BuildContext
Implementation
@override
Widget create(StackWidgetData data, Environment environment, BuildContext context) {
return Stack(
key: ValueKey(data.id),
children: data.children.map((child) => DynamicWidget(
model: child,
meta: typeRegistry[child.type]
)).toList(growable: false)
);
}