private static void handleDGC ( ObjectInputStream ois ) throws IOException, ClassNotFoundException {
        ois.readInt(); // method
        ois.readLong(); // hash
        System.err.println("Is DGC call for " + Arrays.toString((ObjID[]) ois.readObject()));
    }
@param ois
@throws IOException
@throws ClassNotFoundException
src/main/java/marshalsec/jndi/RMIRefServer.java