public static InstitutionContactInstance getUnknownInstance(int ucn, int contactId) {
   InstitutionContactInstance instance = new InstitutionContactInstance();
   instance.ucn = ucn;
   instance.contactId = contactId;
   return instance;
 }
 public static InstitutionContactInstance getEmptyInstance() {
   InstitutionContactInstance instance = new InstitutionContactInstance();
   instance.ucn = 0;
   instance.contactId = 0;
   return instance;
 }