code: def __status(self, job_directory, proxy_status):
          
          if proxy_status == status.COMPLETE:
              if not job_directory.has_metadata(JOB_FILE_POSTPROCESSED):
                  job_status = status.POSTPROCESSING
              else:
                  job_status = status.COMPLETE
          else:
              job_status = proxy_status
          return job_status
docs: Use proxied manager's status to compute the real
          (stateful) status of job.