I am confused. The repo you linked to hasn't had a release since 2016, and I cannot find a reference to that library ANYWHERE else. The firebase android sdk, wh

I am confused. The repo you linked to hasn't had a release since 2016, and I cannot find a reference to that library ANYWHERE else. The firebase android sdk, which is what I would guess you would use (though I don't do android, so could still be wrong) is apache. What am I missing?