# File lib/riddle/configuration/template_index.rb, line 21
      def render
        raise ConfigurationError, "#{@name} #{@parent}" unless valid?

        inherited_name = "#{name}"
        inherited_name << " : #{parent}" if parent
        (
          ["index #{inherited_name}", "{"] +
          settings_body +
          ["}", ""]
        ).join("\n")
      end