The parent object used to scope the current object.
- iOS 7.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
Returning an object from this property lets you use the same restoration identifier for objects with similar behavior but different parents. When registering objects, the
register method checks the value of this property, using the value as the containing scope for the object. For example, an object associated with a view controller can make the view controller its parent.