Max depth feature for a circular dependency?

[morrislaptop]

From https://www.reddit.com/r/PHP/comments/laufir/a_faker_factory_library_to_easily_create_whole/glq1pgl?utm_source=share&utm_medium=web2x&context=3

If we have the following class

use Morrislaptop\PopoFactory\PopoFactory;

class PersonData
{
    public function __construct(
        public $firstName,
        public string $lastName,
        public string $email,
        public PersonData $spouse,
    ) {
    }
}

PopoFactory::new(PersonData::class)->make();

How does it know when to stop? I mean the spose is also a person which can also have a spouse, which is a person so...