code: public synchronized void onRunning() {
  
      LOG.entering(CLASS_NAME, "onRunning");
  
      if (this.driverStatus == DriverStatus.PRE_INIT) {
        this.onInit();
      }
  
      this.clientConnection.send(this.getRunningMessage());
      this.setStatus(DriverStatus.RUNNING);
  
      LOG.exiting(CLASS_NAME, "onRunning");
    }
docs: Changes the driver status to RUNNING and sends message to the client about the transition.
  If the driver is in status 'PRE_INIT', this first calls onInit();