The handler will be attached to the UploadProgressEvent which is fired as data
            is uploaded to S3.  The handler will be passed information detailing how much data
            has been uploaded as well as how much will be uploaded.
            
 Declaration Syntax
 Declaration Syntax| C# | 
[ObsoleteAttribute("The With methods are obsolete and will be removed in version 2 of the AWS SDK for .NET. See http://aws.amazon.com/sdkfornet/#version2 for more information.")] public TransferUtilityUploadRequest WithSubscriber( EventHandler<UploadProgressArgs> handler )
 Parameters
 Parameters- handler (EventHandler<(Of <(<'UploadProgressArgs>)>)>)
- A method that is called when UploadProgressEvent is fired.
 Return Value
 Return Valuethis instance of the TransferUtilityUploadRequest