question: private int handleDataMessage ( String lastRxMsg ) { int result = 0 ; switch ( service ) { case OBD_SVC_NONE : break ; case OBD_SVC_CAN_MONITOR : result = canProt . handleTelegram ( lastRxMsg . toCharArray ( ) ) ; break ; default : result = super . handleTelegram ( lastRxMsg . toCharArray ( ) ) ; } return result ; }
target:  forward data message for further handling