+ // Pixel test ads.
+ // AdRequest adRequest = new AdRequest.Builder().addTestDevice("20DAEEF7662E2238C99A509BE5D78A26").addNetworkExtrasBundle(AdMobAdapter.class, adSettingsBundle).build();
+ // Pixel 2 XL test ads.
+ // AdRequest adRequest = new AdRequest.Builder().addTestDevice("137D42984218CEECDFD11927BB7D6416").addNetworkExtrasBundle(AdMobAdapter.class, adSettingsBundle).build();