CurrentUICulture on Mac

System.Globalization.CultureInfo.InstalledUICulture and also System.Threading.Thread.CurrentThread.CurrentUICulture always returns en-US with Xamarin.Mac. On Windows it returns the language the user configured in the system. How do I get users language setting with Mac?

Edit: its ok, must do it native, for example: https://stackoverflow.com/questions/1085506/how-to-get-language-locale-of-the-user-in-objective-c