private void writeJsonOutFork(final VisualXmas vnet, final VisualForkComponent vn) {
        final Xmas cnet = vnet.getMathModel();
        final ForkComponent sc = vn.getReferencedComponent();
        for (XmasContact contactNode2 : sc.getInputs()) {
            for (Connection c : cnet.getConnections(contactNode2)) {