public function postDuplicate(&$copyFrom)
 {
     $err = parent::postDuplicate($copyFrom);
     $err .= $this->cleanDate();
     if ($err) {
         error_log(__FILE__ . ":" . __LINE__ . ":" . __METHOD__ . " " . $err . "\n");
     }
 }
 /**
  * Hook executed after the store
  *
  * @return string|void
  */
 public function postStore()
 {
     $err = parent::postStore();
     $err .= $this->refreshAudit();
     if ($err) {
         error_log(__FILE__ . ":" . __LINE__ . ":" . __METHOD__ . " " . $err . "\n");
     }
 }
 public function preDelete()
 {
     $msg = parent::preDelete();
     $msg .= $this->checkIfAssociatedChapterExist();
     return $msg;
 }