protected override string RetrieveContentInjection(AppInfo app, CallbackPageContext context)
 {
     if (IsEctDisabled(app) || !ECTShowFeedbackCallback.ShowFeedback(app))
     {
         return(string.Empty);
     }
     else
     {
         return(base.RetrieveContentInjection(app, context));
     }
 }