SetRequestedOrientation does not exist when upgrading to Mono for Android 4.2

I just upgraded to Mono for Android version 4.2. Since then I am getting an error when trying to call `SetRequestedOrientation` from an Activity. Just get an error that says it does not exist in the current context. I was using v4.0 and this was working fine. Just wondering if anyone else is having this issue since upgrading or if you know of a fix. Thanks. This code used to work fine. ``` using System; using Android.App; using Android.Content.PM; using Android.OS; namespace AndroidApplication1 { [Activity(Label = "AndroidApplication1")] public class Activity1 : Activity { protected override void OnCreate(Bundle bundle) { base.OnCreate(bundle); SetRequestedOrientation(ScreenOrientation.Portrait); } } } ```