A method called by SpriteKit after the reference node’s contents are loaded.
- iOS 9.0+
- macOS 10.11+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 3.0+
The deserialized content’s root node.
This method is called after the referenced content is added as a child of the reference node. Override this method in a subclass to implement custom loading behavior.