code: function(type, args, obj) {
          var cfgSelected = DEF_CFG.SELECTED.key;
          this.delegateConfig(type, args, obj);
          var selected = (this.pages.length > 0) ? this.pages[0].cfg.getProperty(cfgSelected) : []; 
          this.cfg.setProperty(cfgSelected, selected, true);
      }
docs: The default Config handler for the CalendarGroup "selected" property
  @method configSelected
  @param {String} type The CustomEvent type (usually the property name)
  @param {Object[]} args The CustomEvent arguments. For configuration handlers, args[0] will equal the newly applied value for the property.
  @param {Object} obj The scope object. For configuration handlers, this will usually equal the owner.