# File lib/xml/dom2/document.rb, line 266
      def getElementsByTagNameNS(nsuri, localname)
        ret = NodeList.new
        @children.each do |node|
          if node.nodeType == ELEMENT_NODE
            if (localname == '*' || node.localname == localname) and
                (nsuri == '*' || node.namespaceURI == nsuri)
              ret << node
            end
            ret << node.getElementsByTagNameNS(nsuri, localname)
          end
        end if @children
        ret
      end