protected BinaryIdContentPair generateIdContentPair(Savable object, BinaryClassObject bco) {
protected BinaryIdContentPair generateIdContentPair(BinaryClassObject bco) {
    protected BinaryIdContentPair generateIdContentPair(Savable object, BinaryClassObject bco) {        BinaryIdContentPair pair = new BinaryIdContentPair(idCount++,                new BinaryOutputCapsule(exporter, bco));        return pair;    }