* @throws SystemException if a system exception occurred
*/
@Override
public Guestbook findByPrimaryKey(Serializable primaryKey)
throws NoSuchGuestbookException, SystemException {
Guestbook guestbook = fetchByPrimaryKey(primaryKey);
if (guestbook == null) {
if (_log.isWarnEnabled()) {
_log.warn(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY + primaryKey);
}