code: function(id, styles) {
      var node = ReactMount.getNode(id);
      CSSPropertyOperations.setValueForStyles(node, styles);
    }
docs: Updates a DOM node with new style values. If a value is specified as '',
  the corresponding style property will be unset.
  
  @param {string} id ID of the node to update.
  @param {object} styles Mapping from styles to values.
  @internal