return CompactHashSet.create();
  }

  /**
   * Returns a new array of the given length with the same type as a reference array.
   *
   * @param reference any array of the desired type
   * @param length the length of the new array
   */
  /*
   * The new array contains nulls, even if the old array did not. If we wanted to be accurate, we

    return CompactHashSet.create();
  }

  /**
   * Returns a new array of the given length with the same type as a reference array.
   *
   * @param reference any array of the desired type
   * @param length the length of the new array
   */
  /*
   * The new array contains nulls, even if the old array did not. If we wanted to be accurate, we

        switch (requestType) {
            case REQUEST_PUT:
                break;
            case REQUEST_GET:
                break;
            default:
                throw new IllegalArgumentException("Illegal request type: " + requestType);
        }

        this.requestType = requestType;
    }

    /**
     * @return Returns the eventType.
     */

    public void test() throws Exception {
        final List<String> list = newArrayList();
        list.add("aaa");
        list.add("bbb");
        list.add("ccc");

        final IndexedIterator<String> it = new IndexedIterator<String>(list.iterator());

        assertThat(it.hasNext(), is(true));

        final Indexed<String> indexed1 = it.next();
        assertThat(indexed1.getIndex(), is(0));

        ThreadGroup tg = Thread.currentThread().getThreadGroup();
        while (tg.getParent() == null) {
            tg = tg.getParent();
        }

        ThreadGroup[] tgList = new ThreadGroup[tg.activeGroupCount()];
        tg.enumerate(tgList);

        boolean seen = false;

        for (ThreadGroup aTgList : tgList) {

    @Test
    void testDependencyManagement() throws Exception {
        File localRepo = getLocalRepositoryPath();
        File pom0 = new File(localRepo, "p0/pom.xml");

        File pom0Basedir = pom0.getParentFile();

        File pom1 = new File(pom0Basedir, "p1/pom.xml");

        // load everything...
        MavenProject project0 = getProjectWithDependencies(pom0);

     */
    @Nonnull
    Optional<List<String>> goals();

    /**
     * Returns a new instance of EncryptOptions with values interpolated using the given properties.
     *
     * @param properties a collection of property maps to use for interpolation
     * @return a new EncryptOptions instance with interpolated values
     */
    @Nonnull

    public String getId() {
        return "default";
    }

    public String pathOf(Artifact artifact) {
        ArtifactHandler artifactHandler = artifact.getArtifactHandler();

        StringBuilder path = new StringBuilder(128);

        path.append(formatAsDirectory(artifact.getGroupId())).append(PATH_SEPARATOR);
        path.append(artifact.getArtifactId()).append(PATH_SEPARATOR);

            File docInfo = new File(destinationDirectory, docInfoName);
            try {
                Files.write(docInfo.toPath(), Collections.singleton(String.format("<meta name=\"adoc-src-path\" content=\"%s\">", relativePath)), StandardOpenOption.CREATE);
            } catch (IOException e) {
                throw new UncheckedIOException(e);
            }
        });
    }

    }

    @Override
    public Set<java.util.Map.Entry<String, Object>> entrySet() {
        if (parent.containsKey(LANG_KEY)) {
            final List<java.util.Map.Entry<String, Object>> list = new ArrayList<>(parent.entrySet());
            Collections.sort(list, (o1, o2) -> {
                final String k1 = o1.getKey();
                if (LANG_KEY.equals(k1)) {
                    return -1;
                }