code: def update_url(self, url=None):
          
          if not url:
              raise ValueError("Neither a url or regex was provided to update_url.")
          post_url = "%s%s" % (self.BASE_URL, url)
          r = self.session.post(post_url)
          return int(r.status_code) < 500
docs: Accepts a fully-qualified url.
          Returns True if successful, False if not successful.