public Object invoke(RMIStub stub,
    MethodDescriptor method,
    Object[] args) throws Throwable 
{
        // object types must bbe written in the context of the corba application server
        // which properly write replaces our objects for corba
        ApplicationServer oldApplicationServer = ServerFederation.getApplicationServer();
        ServerFederation.setApplicationServer(corbaApplicationServer);
        try {
            // let the super class handle everything.  We just need to wrap the context
            return super.invoke(stub, method, args);
        } finally {
            ServerFederation.setApplicationServer(oldApplicationServer);
        }
}