As we broke first (yes, we are the best), Google renamed Google App Indexing to Firebase App Indexing. Truth is, the code base is the same, so you don’t need to do anything new for your Apps to be included.
Google did revamp their documentation and move it all to firebase.google.com/docs/app-indexing.
Google also announced it is moving the app analytics to Firebase analytics, which looks amazing but I wish they’d keep it under Google Analytics.
Get detailed information at: https://www.seroundtable.com/firebase-app-indexing-adds-more-documentation-analytics-22111.html