/**
  * @param Product $product
  */
 private function saveImages($product)
 {
     if ($product->isImagesModified()) {
         $this->getDb()->query("DELETE FROM product_image WHERE product_id = '" . (int) $product->getId() . "'");
         foreach ($product->getImages() as $product_image) {
             $this->getDb()->query("INSERT INTO product_image SET product_id = '" . (int) $product->getId() . "', image = '" . $this->getDb()->escape($product_image['image']) . "', sort_order = '" . (int) $product_image['sort_order'] . "'");
         }
     }
 }