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On this page: https://developer.apple.com/documentation/tvservices/tvtopshelfcarouselitem/mediaoptions we see a full list of the possible MediaOptions applicable to a Carousel item.However, the built-in TV app appears to show some extra ones, see this screen capture: https://www.dropbox.com/s/ranhkgkj64xopxx/Screenshot%202019-09-13%20at%2018.23.33.png?dl=0Any ideas?

On this page: https://developer.apple.com/documentation/tvservices/tvtopshelfaction it states: "When configuring items for a carousel interface, you can specify a custom title and image for the buttons in that interface. If you do not specify a custom title and image, the system chooses default values based on whether you assigned the action object to the playAction or displayAction property of your item."However, I cannot find anywhere in the documentation where you can actually set a custom button title and image.I notice the built-in TV app has custom Play button text.Any ideas?