code: def clear_all_flair(self):
          
          csv = [{'user': x['user']} for x in self.get_flair_list(limit=None)]
          if csv:
              return self.set_flair_csv(csv)
          else:
              return
docs: Remove all user flair on this subreddit.
  
          :returns: The json response from the server when there is flair to
              clear, otherwise returns None.