public RuleBindings() {
        rulesBySubject = new NodeAtStateIndex("rulesBySubject");
        rulesByInput = new NodeAtStateIndex("rulesByInput");
    }

    public void nodeCreated(ModelNodeInternal node) {
        untypedPathReferences.addNode(node);
    }

    public void nodeDiscovered(ModelNodeInternal node) {
        typedPathReferences.addNode(node);

        LOGGER.debug("Project {} - Registering model element '{}' (hidden = {})", projectPath, node.getPath(), node.isHidden());
        addRuleBindings(node, actions);
        modelGraph.add(node);
        ruleBindings.nodeCreated(node);
    }

    private void addRuleBindings(ModelNodeInternal node, Multimap<ModelActionRole, ? extends ModelAction> actions) {
        for (Map.Entry<ModelActionRole, ? extends ModelAction> entry : actions.entries()) {