# File lib/twitter/client/list.rb, line 104
      def lists(*args)
        options = {:cursor => -1}.merge(args.last.is_a?(Hash) ? args.pop : {})
        user = args.first
        merge_user_into_options!(user, options) if user
        response = get("1/lists", options)
        format.to_s.downcase == 'xml' ? response['lists_list'] : response
      end