/**
  * @param \DOMDocument $dom
  * @param \DOMElement $productNode
  * @param Product $product
  */
 protected function addCommonNodesToContentDom($dom, \DOMElement $productNode, Product $product)
 {
     $productIdNode = $dom->createElement("id", $product->getProductId());
     $productNode->appendChild($productIdNode);
     $storeIdNode = $dom->createElement("storeid", $product->getStoreId());
     $productNode->appendChild($storeIdNode);
     $languageNode = $dom->createElement("language", $product->getLanguage());
     $productNode->appendChild($languageNode);
     $availabilityNode = $dom->createElement("availability", $product->getAvailability() ? 1 : 0);
     $productNode->appendChild($availabilityNode);
     $skuNode = $dom->createElement("sku", $product->getSku());
     $productNode->appendChild($skuNode);
     $titleNode = $dom->createElement("title");
     $titleValueTextNode = $dom->createTextNode($product->getTitle());
     $titleNode->appendChild($titleValueTextNode);
     $productNode->appendChild($titleNode);
     $descriptionNode = $dom->createElement("description");
     $descriptionValueTextNode = $dom->createTextNode($product->getDescription());
     $descriptionNode->appendChild($descriptionValueTextNode);
     $productNode->appendChild($descriptionNode);
     $shortDescriptionNode = $dom->createElement("short_description");
     $shortDescriptionValueTextNode = $dom->createTextNode($product->getShortDescription());
     $shortDescriptionNode->appendChild($shortDescriptionValueTextNode);
     $productNode->appendChild($shortDescriptionNode);
     $priceNode = $dom->createElement("price", number_format($product->getPrice(), 2));
     $productNode->appendChild($priceNode);
     $specialPriceNode = $dom->createElement("special_price", number_format($product->getSpecialPrice(), 2));
     $productNode->appendChild($specialPriceNode);
     $groupPriceNode = $dom->createElement("group_price", number_format($product->getGroupPrice(), 2));
     $productNode->appendChild($groupPriceNode);
     $imageLink = $dom->createElement("image_link", $product->getImageLink());
     $productNode->appendChild($imageLink);
 }