local interface ServantLocator : ServantManager
{
  native Cookie;

  Servant preinvoke (in ObjectId oid,
                     in POA adapter,
                     in CORBA::Identifier operation,
                     out Cookie cookie)
  raises (ForwardRequest);

  void postinvoke (in ObjectId oid,
                   in POA adapter,
                   in CORBA::Identifier operation,
                   in Cookie cookie,
                   in Servant servant);
};