Tells the delegate that the user wants to skip to the previous channel.
- tvOS 13.0+
The player view controller.
A completion callback to invoke to dismiss the channel’s interstitial view.
Each call to this method should advance one channel, relative to the previous request, even if the prior request hasn’t yet completed. Adopt this method and replace the current player item with one that reflects the previous channel’s content, and call the completion block to dismiss the channel’s interstitial view.