public static function resolveContentsForTracking(&$textContent, &$htmlContent, $enableTracking = true, $modelId = null, $modelType = null, $personId = null)
 {
     if ($enableTracking) {
         ContentTrackingUtil::resolveContentsForTracking($textContent, $htmlContent, $enableTracking, $modelId, $modelType, $personId);
     }
 }
 protected static function resolveContent(&$textContent, &$htmlContent, Contact $contact, $enableTracking, $modelId, $modelType, $marketingListId)
 {
     assert('is_int($modelId)');
     assert('is_int($marketingListId)');
     GlobalMarketingFooterUtil::resolveContentsForGlobalFooter($textContent, $htmlContent);
     static::resolveContentsForMergeTags($textContent, $htmlContent, $contact, $marketingListId, $modelId, $modelType);
     ContentTrackingUtil::resolveContentsForTracking($textContent, $htmlContent, $enableTracking, $modelId, $modelType, static::$personId);
 }