src/vs/workbench/browser/parts/notifications/notificationsCenter.ts/NotificationsCenter/registerListeners
class NotificationsCenter:	private registerListeners(): void {
		this._register(this.model.onDidChangeNotification(e => this.onDidChangeNotification(e)));
		this._register(this.layoutService.onDidLayout(dimension => this.layout(Dimension.lift(dimension))));
		this._register(this.notificationService.onDidChangeDoNotDisturbMode(() => this.onDidChangeDoNotDisturbMode()));
	}