public static function generateProducts()
 {
     //read in xml document(products)
     $doc = simplexml_load_file(APPLICATION_PATH . '/../products.xml');
     foreach ($doc->category as $cat) {
         $categoryObj = new Category();
         $categoryObj->setUrlKey($cat->urlkey);
         $categoryObj->setName($cat->name);
         $categoryObj->save();
     }
     foreach ($doc->product as $product) {
         $productObj = new Product();
         $productObj->setName($product->name);
         $productObj->setPrice($product->price);
         $productObj->setSku($product->sku);
         $productObj->setDateCreated(date('d-m-Y H:i:s', time()));
         $productObj->setUrlKey($product->urlkey);
         $productObj->setProductImage($product->image);
         $productObj->setCategoryId($product->category);
         $productObj->save();
     }
 }