code: function (domElt) {
          this.setClassName = function (className) {
              domElt.className = className;
          };
  
          this.getClassName = function () {
              return domElt.className;
          };
  
          this._dispose = function () {
              domElt = null;
              this._dispose = null;
          };
      }
docs: Create a DOM Wrapper object to allow safe changes in the DOM classes without giving direct access to the DOM.
  Note that a closure is used to prevent access to the domElt object from the template.
  @param {HTMLElement} domElt DOM element which is wrapped