docs: function mountComponentIntoNode(
      componentInstance,
      rootID,
      container,
      transaction,
      shouldReuseMarkup) {
    var markup = ReactReconciler.mountComponent(
      componentInstance, rootID, transaction, emptyObject
    );
    componentInstance._isTopLevel = true;
    ReactMount._mountImageIntoNode(markup, container, shouldReuseMarkup);
  }