/**
  * Méthode permettant d'ajouter une monnaie alternative
  * @param $alternateCurrencyPostalCode La monnaie alternative à ajouter
  * @return void
  */
 protected function add(AlternateCurrencyPostalCode $alternateCurrencyPostalCode)
 {
     $q = $this->dao->prepare('INSERT INTO ' . $this->table() . ' SET POSTAL_CODE = :postalCode, ALTERNATE_CURRENCY_ID = :alternateCurrencyId');
     $q->bindValue(':postalCode', $alternateCurrencyPostalCode->getPostalCode());
     $q->bindValue(':alternateCurrencyId', $alternateCurrencyPostalCode->getAlternateCurrencyId());
     $q->execute();
     $alternateCurrencyPostalCode->setId($this->dao->lastInsertId());
 }