public static function createAddress()
{
$addr = new ShippingAddress();
$addr->setLine1(self::$line1);
$addr->setLine2(self::$line2);
$addr->setCity(self::$city);
$addr->setState(self::$state);
$addr->setPostalCode(self::$postalCode);
$addr->setCountryCode(self::$countryCode);
$addr->setPhone(self::$phone);
$addr->setRecipientName(self::$recipientName);
return $addr;
}