 					changed = true;
 				}
 			}
-			if(!changed) return;
+			if(! changed) return;
 			var event:CollectionEvent = new CollectionEvent(CollectionEvent.COLLECTION_CHANGED);
 			event.kind = CollectionEventKind.REMOVE;
 			event.delta = delta;

			var newUIDObs:Array = [];
			
			getSubtree(xmlNodeDescriptor.node, newUIDObs, newNodes);
			_mappedArrayCollection.addItemsAt(newNodes,  addedEvent.location);
			ArrayUtil.insertArrayAtIndex(_uids, newUIDObs, addedEvent.location);
			addedEvent.delta = newNodes;

		from ArrayCollection
		*/
		public function removeItems(items:Array):void{
			trace("removeutems: "+items.length)
			var changed:Boolean = false;
			var delta:Array = [];
			var location:int = NaN;
