public InjectStateNode(Node?parent, Context context, InjectStateBase <TState> element) : base(parent, context, element)
{
state = element.NewState();
element.AddListener(state, State_PropertyChanged);
var childElement = element.Callback(state);
child = childElement.CreateNode(this, context);
}
protected override void UpdateElement(InjectStateBase <TState> oldElement, Context oldContext) => UpdateState();