text: /**
   * represent a menu option , just make it selectable and can have select status
   * @author yiminghe@gmail.com
   */
  KISSY.add("menubutton/option", function (S, Menu) {
      var MenuItem = Menu.Item;
      /**
       * Option for Select component.
       * xclass: 'option'.
       * @class KISSY.MenuButton.Option
       * @extends KISSY.Menu.Item
       */
      return MenuItem.extend({}, {
          ATTRS:
          {
              /**
               * Whether this option can be selected.
               * Defaults to: true.
               * @type {Boolean}
               */
              selectable: {
                  value: true
              },
  
              /**
               * String will be used as select 's content if selected.
               * @type {String}
               */
              textContent: {
  
              }
          }
      }, {
          xclass: 'option'
      });
  }, {
      requires: ['menu']
  });