* Regression tests for a body in message_payload and for data_sm
* Read a body from message_payload and accept data_sm
* Assert the fixed message_payload and data_sm behaviour against Jasmin
* Record the message_payload and data_sm fixes in the Jasmin findings
* Read an inbound data_sm as the direction it travelled, and export messageOctets
* Refuse a segment with the code its stand-in command defines
* Name the stand-in the refusal status is read from
lilleman