* @return {@code true} to visit siblings nodes of this node as well, {@code false} to skip siblings
     */
    boolean accept(@Nonnull NodeVisitor visitor);

    /**
     * Returns a new tree starting at this node, filtering the children.
     * Note that this node will not be filtered and only the children
     * and its descendant will be checked.
     *
     * @param filter the filter to apply
     * @return a new filtered graph
     */

        assertPathSuffixEquals("main", pom.getValue("build/resources[1]/targetPath"));
        assertEquals(Boolean.TRUE, pom.getValue("build/resources[1]/filtering"));
        assertEquals(1, ((List<?>) pom.getValue("build/resources[1]/includes")).size());
        assertPathSuffixEquals("main.included", pom.getValue("build/resources[1]/includes[1]"));

        // and "build path" is intermediate data that is used to create actual Java classpath/modulepath
        // but to create those, proper filtering should happen via Type properties.
    }

    @Override
    public void addHandlers(Map<String, ArtifactHandler> handlers) {

    public Optional<Packaging> lookup(String id) {
        id = id.toLowerCase(Locale.ROOT);
        // TODO: we should be able to inject a Map<String, LifecycleMapping> directly,
        // however, SISU visibility filtering can only happen when an explicit
        // lookup is performed. The whole problem here is caused by "project extensions"
        // which are bound to a project's classloader, without any clear definition

                    resource.getDirectory(),
                    null,
                    resource);

            validateBoolean(
                    prefix,
                    "filtering",
                    problems,
                    errOn30,
                    Version.V20,
                    resource.getFiltering(),
                    resource.getDirectory(),