code: function(status) {
          var iconCls = '';
          switch (status) {
              case true:
              case this.STATUS_OK:
                  iconCls = this.ICON_OK;
                  break;
              case this.STATUS_NOTICE:
                  iconCls = this.ICON_NOTICE;
                  break;
              case false:
              case this.STATUS_ERROR:
                  iconCls = this.ICON_ERROR;
                  break;
              case this.STATUS_HELP:
                  iconCls = this.ICON_HELP;
                  break;
          }
          return iconCls;
      }
docs: decodeStatusIcon
  @param {Object} status