docs: function findParent(node) {
    // TODO: It may be a good idea to cache this to prevent unnecessary DOM
    // traversal, but caching is difficult to do correctly without using a
    // mutation observer to listen for all DOM changes.
    var nodeID = ReactMount.getID(node);
    var rootID = ReactInstanceHandles.getReactRootIDFromNodeID(nodeID);
    var container = ReactMount.findReactContainerForID(rootID);
    var parent = ReactMount.getFirstReactDOM(container);
    return parent;
  }