void Current_OnBadgesLoaded(Visitor sender, VisitorEventArgs e)
 {
     if (e.Error != null) {
         // Error is not nil, badge load failed, do something with the error
     }
     else {
     }
 }
        void Current_OnScoreLoaded(Visitor sender, VisitorEventArgs e)
        {
            if (e.Error != null) {
                // Score load failed, do something with the error
            }

            else {
                VisitorScoreBlock.Text = Visitor.Current.Score.ToString();
            }
        }