code: def top_comments(self):
          
          num = min(10, len(self.comments))
          if num <= 0:
              return ''
  
          top_comments = sorted(
              self.comments, key=lambda x: (-x.score, str(x.author)))[:num]
          retval = self.post_header.format('Top Comments')
          for comment in top_comments:
              title = self._safe_title(comment.submission)
              retval += tt('1. {}: {}\'s [comment]({}) in {}\n').format(
                  self._points(comment.score), self._user(comment.author),
                  self._permalink(comment), title)
          return tt('{}\n').format(retval)
docs: Return a markdown representation of the top comments.