AndroidManifest.xml is missing. unity code example

Example: AndroidManifest.xml is missing. unity

string manifestPath = Path.Combine(Application.dataPath, "Plugins/Android/GoogleMobileAdsPlugin.androidlib/AndroidManifest.xml");

=> string manifestPath = Path.Combine(Application.dataPath, "Plugins/Android/GoogleMobileAdsPlugin/AndroidManifest.xml");