Modifies this request with the specified MessageAttributes.
            
 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 SendMessageRequest WithMessageAttribute( params MessageAttribute[] list )
 Parameters
 Parameters- list (array<MessageAttribute>[]()[][])
- The MessageAttributes.
 Return Value
 Return ValueThe current instance.