Decoded-object entry point: same behavior as respond minus line-level DISC_UNIQUE_BRANCH discovery (which has no meaning over a message-based transport like RDMnet RPT — a real E1.33 controller already knows your UID from the Broker's client list). Use this for RDMnet.
Raw-frame entry point: decode requestFrame (a full E1.20 frame
starting with 0xCC), run it through the responder, and return the
raw reply frame to send back — or null if nothing should be sent
(not addressed to us, muted, or a broadcast, all of which are silent
per RDM's rules). Use this for Art-Net (ArtRdm) and LLRP (RDM
Command) transports.
Simulates one RDM-responding device. See module docs for the two entry points.