Get URI or URL of links

I am using the PHP wrapper. I can't get the URI or URL of the links. I navigate this way:

            $annot = $page->GetAnnot($i);
            $lk = new \Link($annot);
            $action = $lk->GetAction();

and from that point I can't get the URIs.

The truth is that I am trying to get a resource in my local file system but I am not able to do that.

Julio Sarachaga.

Have you tried the code in this post?!searchin/pdfnet-sdk/get$20uri%7Csort:date/pdfnet-sdk/naMxLjWbNDw/HKn81mzJY40J