code: @Override
      public WSJobExecution getJobExecutionFromJobExecNum(long jobInstanceId, int jobExecNum) throws NoSuchJobExecutionException, JobSecurityException {
          if (authService != null) {
              authService.authorizedInstanceRead(jobInstanceId);
          }
          return persistenceManagerService.getJobExecutionFromJobExecNum(jobInstanceId, jobExecNum);
      }
docs: {@inheritDoc}