How to: Override exo_styled_controls_play in a downstream Android library (not app)

In trying to move to ExoPlayer 2.17.0 I discover that PlayerView is now deprecated in favor of StyledPlayerView.

Okay, so I switched all usages of PlayerView to StyledPlayerView in my code and layouts. The app built and ran. But the play/pause buttons were broken.

So I dug in and replaced the separate play and pause buttons with the combined play/pause button. That button's logic is hardwired to use exo_styled_controls_play and exo_styled_controls_pause drawables for its play and pause icons.

Okay, so great. I'll just override them in the downstream library module where I use ExoPlayer. That doesn't work in testing when I build my test app. I don't want to have every app where I use this library to separately have to perform this override. I want the override done by the library.

On a larger note, ideally I don't want to override this for the entire app. Rather I'd like to tell StyledPlayerView the DrawableRes ids that I want it to use.

Help would be appreciated here -- as I'm about to just stick with PlayerView as it doesn't have these issues.