https://developer.android.com/reference/kotlin/android/media/MediaDrm.OnEventListener
MediaDrm.OnEventListener | API reference | Android Developers
api referenceandroiddevelopers
https://developer.android.com/reference/kotlin/androidx/media3/exoplayer/drm/ExoMediaDrm.OnEventListener
ExoMediaDrm.OnEventListener | API reference | Android Developers
api referenceandroiddevelopers