// ----------------------------------------------------------
 public ERXDisplayGroup<Submission> studentNewerSubmissions() {
   if (studentNewerSubmissions.masterObject() != aSubmission) {
     studentNewerSubmissions.setMasterObject(aSubmission);
     studentNewerSubmissions.setObjectArray(aSubmission.allSubmissions());
     studentNewerSubmissions
         .queryMin()
         .takeValueForKey(aSubmission.submitNumber() + 1, Submission.SUBMIT_NUMBER_KEY);
     studentNewerSubmissions.setQualifier(studentNewerSubmissions.qualifierFromQueryValues());
   }
   return studentNewerSubmissions;
 }