C# (CSharp) Observer.Coding.Exercise Rat примеры использования

Пример #1

 public void FireNotifyRat(object sender, Rat whichRat)
 {
     NotifyRat?.Invoke(sender, whichRat);
 }

Пример #2

 public void NotifyRat(object sender, Rat whichRat)
 {
     NotifyRatEvent?.Invoke(sender, whichRat);
 }