Using custom models in Xamarin.Forms shared project

Greetings. I am just started with UrhoSharp for Xamarin.Forms, and i trying to use a custom model (.mdl, for example) in shared Xamarin.Forms project, but have not found how to implement it; in urho samples for xamarin i found information about how to did it in native projects, or use simple geometric figures in forms project. Is there a way to import models into shared project at all, and if it is, how it can be done? Thx.

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Thx for answer, i will check it!