code: public void testQueryByInvalidExecutionId(){
    JobQuery query=managementService.createJobQuery().executionId("invalid");
    verifyQueryResults(query,0);
    TimerJobQuery timerQuery=managementService.createTimerJobQuery().executionId("invalid");
    verifyQueryResults(timerQuery,0);
    try {
      managementService.createJobQuery().executionId(null).list();
      fail();
    }
   catch (  ActivitiIllegalArgumentException e) {
    }
    try {
      managementService.createTimerJobQuery().executionId(null).list();
      fail();
    }
   catch (  ActivitiIllegalArgumentException e) {
    }
  }
  