namespace Tests
  {
    public class Class
    {
      public Result S()
      {
        IList<ApplicableCandidate> fullyApplicableCandidates = new List<ApplicableCandidate>();
        if (fullyApplicableCandidates.Count == 0)
          return null;

        if (fullyApplicableCandidates.First.IsDynamicDispatch)     // First = multiple candidates
          return null;

        Uff f = new Uff();
        Func<int, int> v = f.Bar.Bla;  //should resolve to extension ?   

        return null;
      }
    }

    public class Uff
    {
      private bool Bar(string x) { return false; }
      private bool Bar(params string[] x) { return true; }
    }

    public static class Ext
    {
      public static int Bar(this Uff c, int f){return 8;}
    }
  }