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Create a PopUpMenuButton control using an E4X XML data provider

<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">     <mx:Script>                  import mx.controls.Menu         private function initData():void {             Menu(pb2.popUp).selectedIndex=2;         }            </mx:Script>     <mx:XML format="e4x" id="dp2">         <root>             <editItem label="A" />             <editItem label="B" />             <editItem label="C" />             <separator type="separator" />             <editItem label="D" />         </root>     </mx:XML>     <mx:PopUpMenuButton id="pb2" dataProvider="{dp2}" labelField="@label" showRoot="false" creationComplete="initData();" /> </mx:Application>