Xamarin.GooglePlayServices.Ads.Lite How is the InterstitialAdLoadCallback parameter used to load interstitial ads in the new version

[Sergtek]

Xamarin.Android Version:

All.

Operating System & Version:

Windows 10

Packages used:

    <PackageReference Include="Xamarin.GooglePlayServices.Ads.Lite" Version="120.2.0" />
    <PackageReference Include="Xamarin.Forms" Version="5.0.0.2012" />

Describe your Issue

The new version 120.2.0 of the Xamarin.GooglePlayServices.Ads.Lite package brings with it many changes, new APIs, and name changes in various classes. I have been consulting the official documentation to do the appropriate refactorings (https://developers.google.com/admob/android/interstitial), I currently have this:

        public void Show(string adUnit)
        {
            var context = Application.Context;
            InterstitialAd.Load(context, adUnit, new AdRequest.Builder().Build(), ?);
        }

In the official documentation it says that the Load method must be called together with four parameters: the context, the ad id, adRequest and the InterstitialAdLoadCallback, this last parameter I do not understand how to pass it since in the documentation it appears as a new instance but in the Xamarin.GooglePlayServices.Ads.Lite nuget the InterstitialAdLoadCallback class appears as abstract, I would appreciate any help to help me understand how it works.

The documentation shows this example, but the InterstitialAdLoadCallback class cannot be passed in the same way by being abstract: InterstitialAd.load(this,"id", adRequest, new InterstitialAdLoadCallback()