# File lib/nokogiri/xml/node_set.rb, line 125
      def xpath *paths
        handler = ![
          Hash, String, Symbol
        ].include?(paths.last.class) ? paths.pop : nil

        ns = paths.last.is_a?(Hash) ? paths.pop : nil

        sub_set = NodeSet.new(document)
        each do |node|
          sub_set += node.xpath(*(paths + [ns, handler].compact))
        end
        document.decorate(sub_set)
        sub_set
      end