'Return the canonical link of the subreddit.
Ordinarily canonical links are created using request.url.
In the case of subreddits, we perform a bit of magic to strip the
subreddit path from the url. This means that a path like:
https:///www.reddit.com/r/hiphopheads/
will instead show:
https://www.reddit.com/
See SubredditMiddleware for more information.
This method constructs our url from scratch given other information.'

def canonical_link(self):

    return add_sr('/', force_https=True)
