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Use describeType method to show information for a type

<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">   <mx:Script>              import mx.controls.Image;         import mx.controls.Alert;         import mx.rpc.events.FaultEvent;         import mx.rpc.events.ResultEvent;         import flash.utils.describeType;         function faultHandler(event:FaultEvent):void {             Alert.show(event.fault.faultString);         }         function resultHandler(event:ResultEvent):void {             Alert.show(describeType(event.result));         }      </mx:Script>   <mx:HTTPService id="myHTTPService" url="http://localhost/a.png" fault="faultHandler(event)" result="resultHandler(event)" />   <mx:VBox id="myVBox" width="100%" height="100%" />   <mx:Button label="Invoke HTTPService" click="myHTTPService.send()" /> </mx:Application>