builder

# File activerecord/lib/active_record/serializers/xml_serializer.rb, line 165
    def builder
      @builder ||= begin
        options[:indent] ||= 2
        builder = options[:builder] ||= Builder::XmlMarkup.new(:indent => options[:indent])

        unless options[:skip_instruct]
          builder.instruct!
          options[:skip_instruct] = true
        end

        builder
      end
    end