Xamarin.Google.Guava.ListenableFuture conflict

[Loki606]

I am already using Xamarin.Google.Guava for other purposes which also includes the .ListenableFuturue library. Since the NuGet package installs a later version of what I have, I get a conflict.

While there is a solution out there to uninstall some packages and reinstall them and hope for the best, it would be nice if the nuGet didn't cause this in the first place.