protected function showAggregationInfo($a_show_link = true)
 {
     global $ilAccess, $lng, $ilCtrl;
     include_once "Services/Tracking/classes/class.ilTrQuery.php";
     $info = ilTrQuery::getObjectStatisticsLogInfo();
     $info_date = ilDatePresentation::formatDate(new ilDateTime($info["tstamp"], IL_CAL_UNIX));
     $link = "";
     if ($a_show_link && $ilAccess->checkAccess("write", "", $this->ref_id)) {
         $link = " <a href=\"" . $ilCtrl->getLinkTarget($this, "admin") . "\">&raquo;" . $lng->txt("trac_log_info_link") . "</a>";
     }
     ilUtil::sendInfo(sprintf($lng->txt("trac_log_info"), $info_date, $info["counter"]) . $link);
 }