Co-authored-by: Alexander Ebert <ebert@woltlab.com>
* @property-read int|null $pageObjectID id of the object the latest page visited belongs to
* @property-read int|null $parentPageID id of the parent page of latest page visited
* @property-read int|null $parentPageObjectID id of the object the parent page of latest page visited belongs to
- * @property-read int $spiderIdentifier identifier of the spider
+ * @property-read ?string $spiderIdentifier identifier of the spider
*/
class Session extends ACPSession
{