Set 'Suggested Sort' for the comments of the submission.

        Comments can be sorted in one of (confidence, top, new, hot,
        controversial, old, random, qa, blank).

        :returns: The json response from the server.

def set_suggested_sort(self, sort='blank'):
        """Set 'Suggested Sort' for the comments of the submission.

        Comments can be sorted in one of (confidence, top, new, hot,
        controversial, old, random, qa, blank).

        :returns: The json response from the server.

        """
        url = self.reddit_session.config['suggested_sort']
        data = {'id': self.fullname, 'sort': sort}
        return self.reddit_session.request_json(url, data=data)