 
 import mx.collections.IList;
 import mx.components.FxDataContainer;
+import mx.core.IVisualElement;
 import mx.events.IndexChangedEvent;
 import mx.events.CollectionEvent;
 import mx.events.CollectionEventKind;

            invalidateProperties();
        }
    }
    
    //--------------------------------------------------------------------------
    //
    //  Overridden Methods

    }
}

}
