DRAG DROP
The UploadOrder() method in the UploadCallbackService service is not implementing the callback behavior
defined in the IUploadCallBackService interface. You need to modify the class to implement the required
callback behavior. What should you do? (To answer, drag the appropriate code segments to the correct
location or locations in the answer area. Each codesegments may be used once, more than once, or not at all.
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