/// <summary> /// Adds the specified notification. If the displayer is null it will use the default displayer. /// </summary> /// <param name="notification">The notification.</param> /// <param name="priority"></param> /// <param name="displayer">The displayer.</param> public void Add(Notification notification, int priority = 0, Displayer <Notification> displayer = null) { if (displayer == null) { var defaultDisplayer = Displayers.FirstOrDefault(); defaultDisplayer?.Add(notification); return; } if (!Displayers.Any(x => x.Equals(displayer))) { Displayers.Add(displayer); displayer.Add(notification); return; } var newDisplayer = Displayers.FirstOrDefault(x => x.Equals(displayer)); newDisplayer?.Add(notification); }