GoogleApiAvailability in Xamarin.GooglePlayServices.Base nugget packages is used to check for the presence of Google Play Services:
Verify Google Play Services in
OnCreate method of
int resultCode = GoogleApiAvailability.Instance.IsGooglePlayServicesAvailable (this);
Refer to https://learn.microsoft.com/en-us/xamarin/android/data-cloud/google-messaging/remote-notifications-with-fcm?tabs=windows#check-for-google-play-services-and-create-a-notification-channel
More details : https://developers.google.com/android/reference/com/google/android/gms/common/GoogleApiAvailability
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