I can't find a portable template for Xamarin Native in Visual Studio 2017. As you can see in the screenshot
But I want to make the Xamarin. Android and Xamarin.iOS as a cross-platform but I'm not getting the portable template for that. But I have seen in some places there are templates where we can get a portable file for Native Xamarin as well. You can see the screenshot below
Any suggestion how can I get the portable file for native Xamarin.The main reason why I need the portable file is that I wanted to do code sharing between Xamarin.android and Xamarin.iOS.