@SuppressWarnings("unchecked")
  @Override
  public Enumeration<String> getAttributeNames() throws RemoteException, RemoteException {
    Set<String> names = new HashSet<String>();
    names.addAll(getAttributes().keySet());

    return gerenciadornuvem1.<String>getReplicatedContextMultiEnumeration(
        new Enumeration[] {super.getAttributeNames(), Collections.enumeration(names)});
  }