}

    @Override
    public boolean isReachableFromEntryPoint() {
        return true;
    }

    public int getOrdinal() {
        return ordinal;
    }

    public void addEntryNode(Node node) {
        entryNodes.add(node);
    }

    public String diagnostics() {
        return "group " + ordinal + " entry nodes: " + Node.formatNodes(entryNodes);
    }

        OrdinalGroup group = ordinalNodeAccess.group(ordinal);

        for (Node node : nodes) {
            node.maybeInheritOrdinalAsDependency(group);
            group.addEntryNode(node);
            entryNodes.add(node);
            queue.add(node);
        }

        discoverNodeRelationships(queue);
    }

    private void discoverNodeRelationships(LinkedList<Node> queue) {