docs: public void addListeners()
      {
          super.addListeners();
          
          this.addListener(new DateChangedHandler((DateTimeField)this.getField(Person.DATE_CHANGED)));
          this.addListener(new SetUserIDHandler(Person.CHANGED_ID, false));
          
          this.getField(Person.NAME).addListener(new CopyLastHandler(this.getField(Person.NAME_SORT)));    // Only if dest is null (ie., company name is null)
          this.getField(Person.NAME_SORT).addListener(new FieldToUpperHandler(null));
          
          this.getField(Person.POSTAL_CODE).addListener(new CopyFieldHandler(this.getField(Person.POSTAL_CODE_SORT)));
      }