admobs.dart

// TODO: Import ad_manager.dart
import 'package:awesome_drawing_quiz/ad_manager.dart';

import 'package:awesome_drawing_quiz/app_theme.dart';

// TODO: Import firebase_admob.dart
import 'package:firebase_admob/firebase_admob.dart';

import 'package:flutter/material.dart';

...

class _HomeRouteState extends State<HomeRoute> {

  ...

  Future<void> _initAdMob() {
    // TODO: Initialize AdMob SDK
    return FirebaseAdMob.instance.initialize(appId: AdManager.appId);
  }
}