*/
    @Nonnull
    @Override
    public Node collectDependencies(@Nonnull Artifact artifact) {
        return getService(DependencyCollector.class).collect(this, artifact).getRoot();
    }

    /**
     * Shortcut for <code>getService(DependencyCollector.class).collect(...)</code>
     *
     * @throws DependencyCollectorException if the dependency collection failed

        protected Activation.Builder transformActivation_Os(
                Supplier<? extends Activation.Builder> creator, Activation.Builder builder, Activation target) {
            stk.push(nextFrame("os", Activation::getOs));
            try {
                return super.transformActivation_Os(creator, builder, target);
            } finally {
                stk.pop();
            }
        }

        @Override