Sets the RequestId property
            
 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 ErrorResponse WithRequestId( string requestId )
 Parameters
 Parameters- requestId (String)
- A unique ID for tracking the request.
 Return Value
 Return Valuethis instance