private function createDocumentFromOrder(Order $order)
{
$document = new Document();
$billingAddress = $order->getBillingAddress();
$productLines = $this->createProductLinesFromOrder($order);
$total = 0;
foreach ($productLines as $productLine) {
$total += $productLine->getTotal();
}
$document->setBillingAddress($billingAddress->getName())->setCurrency($billingAddress->getCountry()->getCurrency())->setCustomerName($order->getCustomer()->getContact()->getName())->setOrderNumber($order->getId())->setProductLines($productLines)->setTotal($total)->setType('invoice');
return $document;
}