Replying to myself: the "roles" seem to exist as the "default Photo Manager app" and "default Music app", as documented here: https://developer.android.com/prev

Replying to myself: the "roles" seem to exist as the "default Photo Manager app" and "default Music app", as documented here: https://developer.android.com/preview/privacy/scoped-storage#work-with-other-apps-files https://developer.android.com/preview/privacy/scoped-storage...