docs: function(rootID, transaction, context) {
      this._rootNodeID = rootID;
      assertValidProps(this._currentElement.props);
      var closeTag = omittedCloseTags[this._tag] ? '' : '</' + this._tag + '>';
      return (
        this._createOpenTagMarkupAndPutListeners(transaction) +
        this._createContentMarkup(transaction, context) +
        closeTag
      );
    }