onAdLoaded(Object) in InterstitialCallback and onAdLoaded(InterstitialAd) in AdLoadCallback have the same erasure, yet neither overrides the other

[DevPavel]

I'm trying to use the Xamarin.GooglePlayServices.Ads package for Interstitial ads. I wrote my callback class:

internal class InterstitialCallback : InterstitialAdLoadCallback
{
    public override void OnAdLoaded(Java.Lang.Object p0)
    {
        base.OnAdLoaded(p0);
        var ad = p0 as InterstitialAd;
        if (ad != null) 
        {
            AdController.SetInterstitialAd(ad);
            ad.FullScreenContentCallback = new FSContentCallback();
        }
    }

    public override void OnAdFailedToLoad(LoadAdError p0)
    {
        base.OnAdFailedToLoad(p0);
        AdController.SetInterstitialAd(null);
    }
}

But it gives an error: onAdLoaded(Object) in InterstitialCallback and onAdLoaded(InterstitialAd) in AdLoadCallback have the same erasure, yet neither overrides the other

Has anyone found a work around? I found an old work around here: xamarin/GooglePlayServicesComponents#425 (comment)

But it doesn't work anymore, says something like it can't find zzzk.

[DevPavel]

Found a solution! https://learn.microsoft.com/en-us/answers/questions/508242/how-to-add-interstitial-ads-in-xamarin-android