With Mangage Nuget Packages for Solution on VS 2017, updated to the latest Xamarin.Forms 3.5.0.129452
Android project failed with
SegmentedControl.FormsPlugin.Android\SegmentedControlImplementation.cs(4,30,4,37): error CS0234: The type or namespace name 'Android' does not exist in the namespace 'Xamarin.Forms.Platform' (are you missing an assembly reference?)
and subsequent errors