Localize widget with query param?

I have a website which has several emedded piwik widgets. The site itself has a few localizations, and I was wondering if the language for the piwik widgets could be specified somehow?

I came across this
https://github.com/piwik/piwik/issues/835
but it was of no use.

yes, simply add &language=fr or so in the widget urls

Awesome, thanks!