protected function _extractAddressData(Mage_Customer_Model_Address_Abstract $address)
    {
        return array(
            'street' => $address->getStreet(),
            'city' => $address->getCity(),
            'region_code' => $address->getRegionCode(),
            'country_id' => $address->getCountryId(),
            'postcode' => $address->getPostcode(),
        );
    }