async over sync wrapper

Run.cs

public static class Run
{
    private static bool IsDotNetFx =>
        RuntimeInformation.FrameworkDescription.StartsWith(".NET Framework", StringComparison.OrdinalIgnoreCase);

    private static readonly TaskFactory factory =
        new TaskFactory(
            CancellationToken.None,
            TaskCreationOptions.None,
            TaskContinuationOptions.None,
            TaskScheduler.Default);

    public static TResult Sync<TResult>(Func<Task<TResult>> func)
    {
        if (IsDotNetFx)
        {
            return factory.StartNew(func).Unwrap().GetAwaiter().GetResult();
        }
        else
        {
            return func().GetAwaiter().GetResult();
        }
    }

    public static void Sync(Func<Task> func)
    {
        if (IsDotNetFx)
        {
            factory.StartNew(func).Unwrap().GetAwaiter().GetResult();
        }
        else
        {
            func().GetAwaiter().GetResult();
        }
    }
}