src/vs/workbench/browser/parts/notifications/notificationsToasts.ts/NotificationsToasts/onDidChangeNotification
class NotificationsToasts:	private onDidChangeNotification(e: INotificationChangeEvent): void {
		switch (e.kind) {
			case NotificationChangeType.ADD:
				return this.addToast(e.item);
			case NotificationChangeType.REMOVE:
				return this.removeToast(e.item);
		}
	}