How to check if a user is NOT authorized in Symfony?

Question

symfony

All examples describe cases when you need to check for some access rights to the page (via Voter), but I need the opposite - so that only unauthorized users have access to the page.
You can, of course, check for ROLE_USER (if there is, do a redirect from the page), which, as it were, all users have. But what if a user without this role somehow appears later?
It's better to just check if the user is logged in or not. But how to do it (in the controller)?

Answer 1

https://symfony.com/doc/current/security.html#chec...
!$this->isGranted('IS_AUTHENTICATED_REMEMBERED');