Request for example of nested wrapped/flattened maps in Protocol tests for RestXml

[wooj2]

Hi,

Would it be possible to add a test case in the protocol tests to generate a test for both a nested wrapped map, and a nested flattened map?

In the case of nested list work, the RestXml tests seem to have this example:
https://github.com/awslabs/smithy/blob/3488bf6e742d6a56443267f5697bcecffff6064b/smithy-aws-protocol-tests/model/restXml/document-lists.smithy#L297

And ideally, we would have something similar for maps.

Thanks!