Hi, on the sample code here: https://dev.twitter.com/cards/types/photo
you can find the twitter:url parameter, but it seems it’s completely ignored both by the documentation of markup https://dev.twitter.com/cards/markup and by the parser as well.
I would expect to be able to override the url of the card and possibly add some google analytics code, but it seems it’s not possible. any idea how to do that?