Make swssion pass on any additional information.

src/clock.rs

@@ -58,7 +58,7 @@ mod clocks {
     fn sends_timestamp() {
         let rx = start_clock([MsgType::Time].to_vec());
         let msg = rx.recv_timeout(TIMEOUT).unwrap();
-        match msg.get_class() {
+        match msg.get_msg_type() {
             MsgType::Time => {
                 msg.get_data("time").unwrap().to_datetime().unwrap();
             }