code: function(index) {
          var nd=this.nodeInstance;
          if (!nd) {
              nd=this.root;
          }
          if (nd) {
              return nd.getElementNode(index);
          }
          return null;
      }
docs: Method that will be associated to the component controller to allow for finding an element
  in the DOM generated by its template
  Note: this method only returns element nodes - i.e. node of type 1 (ELEMENT_NODE)
  As a consequence $getElement(0) will return the first element, even if a text node is inserted before
  @param {Integer} index the position of the element (e.g. 0 for the first element)
  @retrun {DOMElementNode}