According to the Apple docs for MPContentItem.playable:
When set to YES, the designated content item is able to be played. Containers and individual content items can set this property to YES. For example, a playlist with multiple songs in it. The playlist is a container that can be played, or the user could choose a song from inside of the playlist.
https://developer.apple.com/documentation/mediaplayer/mpcontentitem/1620158-playable?language=objc
However, when I set a container to be playable, it ceases to be a container. When I tap it, it plays, so how could I ever see the listing of child items? When it plays it goes to now playing screen and then hitting back takes me back to where I tapped it (ie the top level listing) so I can never get to the second level listing.
So is the documentation wrong, or is it actually possible to create a playable container?