code: public void testQueryByRetriesLeft(){
    JobQuery query=managementService.createJobQuery();
    verifyQueryResults(query,1);
    TimerJobQuery timerQuery=managementService.createTimerJobQuery();
    verifyQueryResults(timerQuery,3);
    final Job job=managementService.createTimerJobQuery().processInstanceId(processInstanceIdOne).singleResult();
    managementService.setTimerJobRetries(job.getId(),0);
    managementService.moveJobToDeadLetterJob(job.getId());
    verifyQueryResults(query,1);
    verifyQueryResults(timerQuery,2);
  }
  