Getting "Unresolved reference: registerWith" error for FlutterFirebaseFirestorePlugin.registerWith

[rahuldubey11]

Hello,

In my Flutter project, I use background isolate to execute some code. For the background isolate I need 3 Firebase plugins so I was using the below code before upgrading the Firebase plugins:

FlutterFirebaseAuthPlugin.registerWith(nativeView.pluginRegistry.registrarFor("io.flutter.plugins.firebase.auth.FlutterFirebaseAuthPlugin"))
FlutterFirebaseFirestorePlugin.registerWith(nativeView.pluginRegistry.registrarFor("io.flutter.plugins.firebase.firestore.FlutterFirebaseFirestorePlugin"))
FlutterFirebaseCorePlugin.registerWith(nativeView.pluginRegistry.registrarFor("io.flutter.plugins.firebase.core.FlutterFirebaseCorePlugin"))

But after the update I get "Unresolved reference: registerWith" for all the 3 plugins and the build fails.

Can someone please help me register these plugins individually.

P.S. I understand registerWith function is deprecated, but I couldn't find its alternative.