# File lib/twitter/client/lists.rb, line 547
      def list_update(*args)
        options = args.last.is_a?(Hash) ? args.pop : {}
        list = args.pop
        options.merge_list!(list)
        owner = args.pop || self.current_user.screen_name
        options.merge_owner!(owner)
        list = post("/1/lists/update.json", options)
        Twitter::List.new(list)
      end