The default value is true.
This method is deprecated and application developers should instead use UIViewController.ShouldAutomaticallyForwardAppearanceMethods and UIViewController.ShouldAutomaticallyForwardRotationMethods.
By default, this setting is true, and UIKit will invoke the following methods on the nested view controllers automatically: UIViewController.ViewWillAppear(bool), UIViewController.ViewDidAppear(bool), UIViewController.ViewWillDisappear(bool), UIViewController.ViewDidDisappear(bool), UIViewController.WillRotate(UIInterfaceOrientation, double), UIViewController.WillAnimateRotation(UIInterfaceOrientation, double) and UIViewController.DidRotate(UIInterfaceOrientation). If this value is set to false, your view controller is responsible to forward those events to the nested view controllers.