code: def top_stories(self, raw=False, limit=None):
          
          top_stories = self._get_stories('topstories', limit)
          if raw:
              top_stories = [story.raw for story in top_stories]
          return top_stories
docs: Returns list of item ids of current top stories
  
          Args:
              limit (int): specifies the number of stories to be returned.
              raw (bool): Flag to indicate whether to represent all
                  objects in raw json.
  
          Returns:
              `list` object containing ids of top stories.