How to retrieve return value in out interceptor?

Hi,

I want to filter some return values in an out interceptor, but am
struggling to figure out how to retrieve it.

I have tried this:

MessageContentsList outObjects =
MessageContentsList.getContentsList(message);
Exchange exchange = message.getExchange();
OperationInfo op = exchange.getBindingOperationInfo() == null
? null
: exchange.getBindingOperationInfo().getOperationInfo();

and see a lot of info...but can't figure out how to retrieve the _return
value I see in the xxx.jaxws_asm

Any pointers?