Rémi Bernon (@rbernon) commented about include/windows.media.playback.idl:
uuid(c75a9405-c801-412a-835b-83fc0e622a8e)- ]
 - interface IMediaPlayerDataReceivedEventArgs : IInspectable
 - {
 [propget] HRESULT Data([out, retval] Windows.Foundation.Collections.ValueSet **value);- }
 - [
 contract(Windows.Foundation.UniversalApiContract, 1.0),marshaling_behavior(agile),static(Windows.Media.Playback.IBackgroundMediaPlayerStatics, Windows.Foundation.UniversalApiContract, 1.0),threading(both)- ]
 - runtimeclass BackgroundMediaPlayer
 - {
 - }
 
```suggestion:-8+0 [ contract(Windows.Foundation.UniversalApiContract, 1.0), deprecated("Use MediaPlayer", deprecate, Windows.Foundation.UniversalApiContract, 4.0), marshaling_behavior(agile), static(Windows.Media.Playback.IBackgroundMediaPlayerStatics, Windows.Foundation.UniversalApiContract, 1.0), threading(both) ] runtimeclass BackgroundMediaPlayer { } ```