code: function _onChildNodeInserted(event, res) {
          // res = {parentNodeId, previousNodeId, node}
          if (res.node.nodeId > 0) {
              var parent = nodeWithId(res.parentNodeId);
              var previousNode = nodeWithId(res.previousNodeId);
              var node = new DOMNode(exports, res.node);
              parent.insertChildAfter(node, previousNode);
          }
      }
docs: WebInspector Event: DOM.childNodeInserted