Is there an easy way to validate that a Spring Webflow (1.0.x) has proper outputs in an attribute mapper that occurs in an end state from within an integration test?

Question

I have several integration tests that test the execution of flows for subflows. However, I would like to be able to examine the mapped output attributes of the subflow when it ends. Is there an easy way to do this for Webflow (1.0.x)?

For the record, my tests are a custom extension of AbstractXmlFlowExecutionTests, so pretty much anything that can do, my tests can do.