SKOverlayDelegate
Methods for responding to the overlay’s appearance, dismissal, or failure to load.
Declaration
protocol SKOverlayDelegate : NSObjectProtocolTopics
Responding to the Overlay’s Appearance and Disappearance
storeOverlayWillStartPresentation(_:transitionContext:)storeOverlayDidFinishPresentation(_:transitionContext:)storeOverlayWillStartDismissal(_:transitionContext:)storeOverlayDidFinishDismissal(_:transitionContext:)SKOverlay.TransitionContext