Get the message this raw message is based upon.returnoriginal message
Get the message's queue priority.returnpriority
Get the message's raw data payload.returndata payload buffers
Is this a no-delay message. No-delay messages are transmitted immediately, i.e. force-flushed out the transport.returntrue if a no-delay message
Get the yet-unsent message types that should be removed before queueing this message for sending.returnmessage types; null if no types