Cleaner::getOwner

public function getOwner(): DiskUser
{
	if (!($this->owner instanceof DiskUser))
	{
		$this->owner = DiskUser::loadById($this->getOwnerId());
		if (!($this->owner instanceof DiskUser))
		{
			$this->owner = DiskUser::loadById(DiskSystemUser::SYSTEM_USER_ID);
		}
	}

	return $this->owner;
}