/** @since Available in iOS 8.0 and later. */
 @WeaklyLinked
 public void cancelPreroll() {
   AVPlayerViewControllerExtensions.cancelPreroll(this);
 }
 /** @since Available in iOS 8.0 and later. */
 @WeaklyLinked
 public static void preparePrerollAds() {
   AVPlayerViewControllerExtensions.preparePrerollAds();
 }
 /** @since Available in iOS 8.0 and later. */
 @WeaklyLinked
 public void playPrerollAd(@Block VoidBlock1<NSError> completionHandler) {
   AVPlayerViewControllerExtensions.playPrerollAd(this, completionHandler);
 }