Adds a set of key-value pairs to the request.
            The S3 Object that you create will have this metadata associated
            with it.
            
 Declaration Syntax
 Declaration Syntax| C# | 
public InitiateMultipartUploadRequest WithMetaData( NameValueCollection metaInfo )
 Parameters
 Parameters- metaInfo (NameValueCollection)
- The set of key-value pairs that will eventually be associated with the S3 Object
 Return Value
 Return Value