Get product SEF link in all languages

[keep]

Can I get somehow the sef url of the current product in a multilanguage shop in all availagble languages?

$url1 = "index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=".$this->product->virtuemart_product_id."&virtuemart_category_id=".$this->product->virtuemart_category_id";
echo JRoute::_($url1);

This is great for the current language, but how can I get the translated version of this url?
I need this information in the productdetails view