Sets an ETag that should not be matched as a pre-condition for returning the object,
            otherwise a PreconditionFailed signal is returned.
            
 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 GetObjectRequest WithETagToNotMatch( string etagToNotMatch )
 Parameters
 Parameters- etagToNotMatch (String)
- The ETag to test
 Return Value
 Return Valuethis instance
 Remarks
 Remarks
            When this is set the S3 object is returned only if
            its entity tag (ETag) is different from the one
            specified, otherwise return a 304 (not modified).