NULL

TYPO3\CMS\Core\Session\UserSessionprototypeobject
   identifier => protected'589c3010b9e0411b9f94716884dac193' (32 chars)
   userId => protectedNULL
   lastUpdated => protected1743678204 (integer)
   data => protectedarray(empty)
   wasUpdated => protectedFALSE
   ipLock => protected'' (0 chars)
   isNew => protectedTRUE
   isPermanent => protectedFALSE