https://developer.android.com/reference/kotlin/androidx/leanback/widget/PlaybackSeekDataProvider.ResultCallback
PlaybackSeekDataProvider.ResultCallback | API reference | Android Developers
api referenceandroiddevelopers
https://developers.google.com/android/reference/kotlin/com/google/android/gms/common/api/ResultCallback
ResultCallback | Google Play services | Google for Developers
google play servicesdevelopers