res = append(res, fmt.Sprintf("MuxID: %v", m.MuxID))
	}
	if m.Seq != 0 {
		res = append(res, fmt.Sprintf("Seq: %v", m.Seq))
	}
	if m.DeadlineMS != 0 {
		res = append(res, fmt.Sprintf("Deadline: %vms", m.DeadlineMS))
	}
	if m.Handler != handlerInvalid {
		res = append(res, fmt.Sprintf("Handler: %v", m.Handler))
	}
	if m.Op != 0 {
		res = append(res, fmt.Sprintf("Op: %v", m.Op))
	}