} catch (DependencyCollectionException e) {
            throw new DependencyResolverException("Unable to collect dependencies", e);
        }
    }

    @Override
    public List<Node> flatten(Session s, Node node, PathScope scope) throws DependencyResolverException {
        InternalSession session = InternalSession.from(s);
        DependencyNode root = cast(AbstractNode.class, node, "node").getDependencyNode();