{
            Object newValue = notification.getNewValue();
            if (newValue != null)
            {
              Holder holder = (Holder)newValue;
              if (!holder.isFrozen())
              {
                ESuperAdapter eSuperAdapter = holder.getESuperAdapter();
                eSuperAdapter.getSubclasses().add((EClass)notification.getNotifier());
              }
            }
            break;
          }