# File lib/twitter/client/list_subscribers.rb, line 141
      def list_subscriber?(*args)
        options = args.last.is_a?(Hash) ? args.pop : {}
        user_to_check, list = args.pop, args.pop
        user = args.pop || get_screen_name
        merge_list_into_options!(list, options)
        merge_owner_into_options!(user, options)
        merge_user_into_options!(user_to_check, options)
        get("1/lists/subscribers/show", options, :format => :json, :raw => true)
        true
      rescue Twitter::NotFound, Twitter::Forbidden
        false
      end