How to access Calendar from Xamarin forms

I am trying for several hours to access Calendar from Xamarin forms for Android platform. I got the following docs for Android platform http://developer.xamarin.com/guides/android/user_interface/calendar/

But I am getting compile error "An object reference is required for the non-static field, method or property ... " for the following line.

ContentResolver.Insert(CalendarContract.Events.ContentUri, eventValues);

Wondering whether it's possible to access Calendar from Xamarin Forms for Android platform