ject} templateInfo Template metadata for current template
       * @param {Object} nodeInfo Node metadata for current template.
       */
      static _parseTemplateChildNodes(root, templateInfo, nodeInfo) {
        for (let node=root.firstChild, parentIndex=0, next; node; node=next) {
          // Wrap templates
          if (node.localName == 'template') {
            node = wrapTemplateExtension(node);
          }
          // collapse adjacent textNodes: fixes an IE issue that can cause
          // tex