Open multiple notifications

1

I’m using the new panel.notification API to open notifications. I noticed that when opening multiple notifications only the last one is visible:

let notifications = [
  'notification 1',
  'notification 2',
  'notification 3'
];
notifications.forEach(notification => {
  window.panel.notification.open(notification);
});

Just to make sure I’m not missing something obvious. I guess more than one notification at the same time is simply not supported?