How do we use HTTPService and IOperation together in a service.

Code:
		public function getXXXXs():IOperation {
			var operation:IOperation = myHttpService.send();
			operation.addCompleteListener(handleComplete);
			operation.addErrorListener(handleError);
			return operation;
		}
In the above code, myHttpService.send() return type is AsyncToken.

Here I am not sure how I suppose to write my code for an HTTPService call and handling the response.

Would be great if someone can show me a correct approach.

Thanks.