public function initEventLog(ContactSource $source, Contact $contact, $lineNumber)
    {
        $eventLog = new ContactEventLog();
        $eventLog->setUserId($source->getCreatedBy())
            ->setUserName($source->getCreatedByUser())
            ->setBundle('lead')
            ->setObject('import')
            ->setObjectId($contact->getId())
            ->setProperties(
                [
                    'line' => $lineNumber,
                    'file' => $source->getOriginalFile(),
                ]
            );

        return $eventLog;
    }