code: def progress(self, nextRound=True):
          
  
          currentJob = self.currentJob
          if currentJob is None:
              return currentJob
  
          jobInfo = currentJob.info()
  
          if jobInfo['state'] == 'RUNNING':
              return currentJob
          elif jobInfo['state'] == 'FINISHED':
              nextJob = self._nextJob(currentJob, nextRound)
              self.currentJob = nextJob
              return nextJob
          else:
              error = NutchCrawlException("Unexpected job state: {}".format(jobInfo['state']))
              error.current_job = currentJob
              raise NutchCrawlException
docs: Check the status of the current job, activate the next job if it's finished, and return the active job
  
          If the current job has failed, a NutchCrawlException will be raised with no jobs attached.
  
          :param nextRound: whether to start jobs from the next round if the current job/round is completed.
          :return: the currently running Job, or None if no jobs are running.