Update $this->url for different languages

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Is there a way to have the $this->url function update automatically if the visitor is viewing a particular language?

My issue right now is if I'm using $this->url('/privacy-policy') and they're on the /es site, then it doesn't add /es to the URL. It still sends them to example.com/privacy-policy instead of example.com/es/privacy-policy.

This is the case even if it's mapped using the Internationalization add-on.