public function SaveExemptionComment(ExemptionComment $exemptionComment)
 {
     try {
         $SQL = self::$INSERT_EXEMPTION_COMMENTS;
         $conn = self::$db->getConnection();
         $stmt = $conn->prepare($SQL);
         $stmt->bindValue(':exemptionSeq', $exemptionComment->getExemptionSeq());
         $stmt->bindValue(':comments', $exemptionComment->getComments());
         $stmt->bindValue(':userSeq', $exemptionComment->getUserSeq());
         $stmt->execute();
         $error = $stmt->errorInfo();
     } catch (Exception $e) {
         $e;
     }
 }