AndroidX: AndroidX.Leanback.Preference missing ...Compat

Version Information

• Visual Studio version (eg. 16.8 or 8.8): 16.10.4
• Xamarin.Android version (eg. 11.1): 11.3.0.4
• Using AndroidX or Support Libraries: AndroidX
• If Support Libraries, version (eg 28.0.0):

Describe your Issue:

I’m trying to use AndroidX.Leanback.Preference but all the ...Compat classes seems to be missing.

For instance the LeanbackSettingsFragmentCompat which I seem to be using. All the classes without Compat have [Obsolete] everywhere.

Steps to Reproduce (with link to sample solution if possible):

1. Create Xamarin.Android app
2. Add Xamarin.AndroidX.Preference and Xamarin.AndroidX.Leanback.Preference
3. Try to create a class that extends LeanbackSettingsFragmentCompat

Include any relevant Exception Stack traces, build logs, adb logs: