# File lib/xml/dom/core.rb, line 2160
      def _getMyLocation(parent)
        index = 1
        parent.childNodes do |child|
          if child == self
            return "child(#{index},#{@name})"
          end
          if child.nodeType == ELEMENT_NODE && child.nodeName == @name
            index += 1
          end
        end
        nil
      end