public static String toString(JobId jid) {
    return jid.toString();
  }
@Test
  @Timeout(120000)
  public void testJobIDtoString() {
    JobId jid = RecordFactoryProvider.getRecordFactory(null).newRecordInstance(JobId.class);
    jid.setAppId(ApplicationId.newInstance(0, 0));
    assertEquals("job_0_0000", MRApps.toString(jid));
  }