build method
Implementation
@override
Component build(Binding binding) {
_state ??= (component).createState();
_state!._component = component;
_state!._binding = this;
_state!.initState();
if (binding._owner != null && binding.key is GlobalKey) {
(binding.key as GlobalKey).binding = this;
_owner!.addState(state);
}
return _state!.build(binding);
}