How do I add alternative app icons for a SwiftUI tvOS app?

I am familiar with providing the main layered app icon for a tvOS project, but I cannot work out how to successfully add support for alternative layered icons in the info.plist and/or asset catalog and/or build settings for a SwiftUI (or Swift) tvOS project.

Whenever I check the result of UIApplication.shared.supportsAlternateIcons it returns false

I have witnessed other tvOS apps such as Plex successfully switch the app icon, so it must be possible to do.

How should the project be configured, what am I missing?

How do I add alternative app icons for a SwiftUI tvOS app?
 
 
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