Can I change the theClass property of an existing notification?

[sebastientromp]

When I receive a certain event, I'm doing this kind of logic:

// activeNotifications is a wrapper around the Notification object with additional domain-specific metadata.
const activeNotif = this.activeNotifications.find((notif) => notif.cardId === cardId);
if (activeNotif != null) {
    const toast = activeNotif.toast;
    toast.theClass = 'active';
    console.log('active notif found', activeNotif, toast);
}

However, the active class isn't set in the existing notification.
Do you know if this behavior is supported?
Can I cache the Notification object? If not, do I have an option to retrieve the notification (using an ID or something) from the NotificationsService?

Thanks!