Xamarin.Android Version (eg: 6.0):

Microsoft Visual Studio Community 2019
Version 16.4.2
Microsoft .NET Framework
Version 4.8.03752
Xamarin.Android SDK 10.1.1.0 (d16-4/f2c9364)

Operating System & Version (eg: Mac OSX 10.11):

Windows 10 (1909)

Support Libraries Version (eg: 23.3.0):

Xamarin.AndroidX.Preference 1.1.0-rc1

Describe your Issue:

PreferenceManager.GetDefaultSharedPreferences(this.context)
Error CS0117 'PreferenceManager' does not contain a definition for 'GetDefaultSharedPreferences'

The only static member available on PreferenceManager is SetDefaultValues (and the ones from base Object).