protected function getAddress(OrderInterface $order)
{
$ret = $order->getBillingAddress1();
if (null !== $order->getBillingAddress2()) {
$ret .= ' ' . $order->getBillingAddress2();
}
if (null !== $order->getBillingAddress3()) {
$ret .= ' ' . $order->getBillingAddress3();
}
return $ret;
}