src/vs/workbench/browser/parts/notifications/notificationsAlerts.ts/NotificationsAlerts/triggerAriaAlert
class NotificationsAlerts:	private triggerAriaAlert(notifiation: INotificationViewItem): void {
		if (notifiation.silent) {
			return;
		}

		// Trigger the alert again whenever the message changes
		const listener = notifiation.onDidChangeContent(e => {
			if (e.kind === NotificationViewItemContentChangeKind.MESSAGE) {
				this.doTriggerAriaAlert(notifiation);
			}
		});

		Event.once(notifiation.onDidClose)(() => listener.dispose());

		this.doTriggerAriaAlert(notifiation);
	}