code: def _startServiceJobs(self):
          
          self.issueQueingServiceJobs()
          while True:
              serviceJob = self.serviceManager.getServiceJobsToStart(0)
              # Stop trying to get jobs when function returns None
              if serviceJob is None:
                  break
              logger.debug('Launching service job: %s', serviceJob)
              self.issueServiceJob(serviceJob)
docs: Start any service jobs available from the service manager