# File lib/nokogiri/xml/node.rb, line 780
      def to_xhtml options = {}
        # FIXME: this is a hack around broken libxml versions
        return dump_html if Nokogiri.uses_libxml? && %w[2 6] === LIBXML_VERSION.split('.')[0..1]

        options[:save_with] |= SaveOptions::DEFAULT_XHTML if options[:save_with]
        options[:save_with] = SaveOptions::DEFAULT_XHTML unless options[:save_with]
        serialize(options)
      end