Gc\Mvc\Listener\DocumentListener::logVisitor PHP Method

    protected function logVisitor($isPreview, $isAdmin)
    {
        if (!$isPreview and !$isAdmin) {
            try {
                $visitor = new Visitor();
                $session = new SessionContainer();
                $sessionId = $session->getDefaultManager()->getId();
                $session->visitorId = $visitor->getVisitorId($sessionId);
            } catch (Exception $e) {
                //don't care
            }
        }
    }