public static AjaxContinuation WithSubmission(this AjaxContinuation ajaxContinuation, Notification notification)
 {
     ajaxContinuation.Success = notification.IsValid();
     ajaxContinuation.AddErrors(notification.ToValidationErrors());
     return ajaxContinuation;
 }
 internal static void Combine(this ValidationResult firstResult, ValidationResult secondResult)
 {
     firstResult.AddErrors(secondResult.ErrorList);
 }