/// <summary>
 /// Provides the ability to add an error as a Notification message.
 /// </summary>
 public static NotificationCollection AddError(this NotificationCollection instance, string error)
 {
     return(instance.AddError(error, string.Empty));
 }
 /// <summary>
 /// Provides the ability to add a  <see cref="System.Exception"/> as a Notification message
 /// </summary>
 public static NotificationCollection AddException(this NotificationCollection instance, Exception exception)
 {
     return(instance.AddError(exception.Message));
 }