init method
void
init()
Drop-in for setupFirebaseCoreMocks() that also seeds the plugin constants
some Firebase plugins read (and assert on) before their platform delegate
is built — notably Crashlytics' isCrashlyticsCollectionEnabled, which the
official mock leaves empty. Call it before Firebase.initializeApp() in
place of setupFirebaseCoreMocks() when the boot touches Crashlytics.
Implementation
void init() {
TestFirebaseCoreHostApi.setUp(_SeededFirebaseCore());
}