# File lib/twitter/client/list_subscribers.rb, line 69
      def list_subscribe(*args)
        options = args.last.is_a?(Hash) ? args.pop : {}
        list = args.pop
        user = args.pop || get_screen_name
        merge_list_into_options!(list, options)
        merge_owner_into_options!(user, options)
        response = post("1/lists/subscribers/create", options)
        format.to_s.downcase == 'xml' ? response['list'] : response
      end