code: function (key) {
      
              key = key.toLowerCase();
          
              var property = this.config[key];
      
              if (property && property.event && 
      
                  !Lang.isUndefined(property.value)) {
      
                  if (this.queueInProgress) {
      
                      this.queueProperty(key);
      
                  } else {
      
                      this.fireEvent(key, property.value);
      
                  }
      
              }
          }
docs: Fires the event for a property using the property's current value.
  @method refireEvent
  @param {String} key The name of the property