How to decode a QR Code with Xamarin.Mac?

Hello.
I just began coding with Xamarin.Mac: it's really nice but some 3rd party package is still missing for my needings. Specifically, I use ZXing.Net NuGet package for a project that I developed for Windows (UWP), Linux and Android, but the same package doesn't install in Xamarin.Mac because it is not supported.
Do you know any alternative? I just need to decode a QR Code stored in a .png file.

Thanks,

Matteo.