ArtifactMetadataSource mds = new ArtifactMetadataSource() {
            @Override
            public ResolutionGroup retrieve(
                    Artifact artifact,
                    ArtifactRepository localRepository,
                    List<ArtifactRepository> remoteRepositories) {
                Set<Artifact> dependencies = new HashSet<>();

   *
   * @return this
   * @throws IllegalStateException if any of the Services are not {@link State#NEW new} when the
   *     method is called.
   */
  @CanIgnoreReturnValue
  public ServiceManager startAsync() {
    for (Service service : services) {
      checkState(service.state() == NEW, "Not all services are NEW, cannot start %s", this);
    }

   *
   * @return this
   * @throws IllegalStateException if any of the Services are not {@link State#NEW new} when the
   *     method is called.
   */
  @CanIgnoreReturnValue
  public ServiceManager startAsync() {
    for (Service service : services) {
      checkState(service.state() == NEW, "Not all services are NEW, cannot start %s", this);
    }

            try (Reader reader = new BufferedReader(new InputStreamReader(form.elevateWordFile.getInputStream(), getCsvEncoding()))) {
                elevateWordService.importCsv(reader);
                suggestHelper.deleteAllElevateWord(false);
                suggestHelper.storeAllElevateWords(false);
            } catch (final Exception e) {
                throw new FessSystemException("Failed to import data.", e);

        // Create a stream that will cause an error during reading
        final InputStream errorStream = new InputStream() {
            @Override
            public int read() throws IOException {
                throw new IOException("Simulated read error");
            }
        };

        final String customEncoding = "ISO-8859-1";

    }

    @Test
    void testResolveArtifacts() throws Exception {
        ArtifactRequest req1 = new ArtifactRequest();
        req1.setArtifact(new DefaultArtifact("ut.simple:artifact:1.0"));
        req1.addRepository(newTestRepository());

        ArtifactRequest req2 = new ArtifactRequest();
        req2.setArtifact(new DefaultArtifact("ut.simple:artifact:zip:1.0"));
        req2.addRepository(newTestRepository());

        Map<String, ToolchainFactory> factories = new HashMap<>();
        factories.put("basic", toolchainFactoryBasicType);
        factories.put("rare", toolchainFactoryRareType);

        when(lookup.lookupMap(ToolchainFactory.class)).thenReturn(factories);
        when(lookup.lookupMap(org.apache.maven.toolchain.ToolchainFactory.class))
                .thenReturn(Map.of());

   */
  @SuppressWarnings("rawtypes") // https://github.com/google/guava/issues/989
  public static <E extends Comparable> TreeMultiset<E> create() {
    return new TreeMultiset<>(Ordering.natural());
  }

  /**
   * Creates a new, empty multiset, sorted according to the specified comparator. All elements
   * inserted into the multiset must be <i>mutually comparable</i> by the specified comparator:

      return (Multiset.Entry<E>[]) new Multiset.Entry<?>[length];
    }

    @Override
    public Iterable<Entry<E>> order(List<Entry<E>> insertionOrder) {
      // We mimic the order from gen.
      Map<E, Entry<E>> map = new LinkedHashMap<>();
      for (Entry<E> entry : insertionOrder) {
        map.put(entry.getElement(), entry);
      }

      Set<E> seen = new HashSet<>();

        // v1-->v2
        graph.addEdge(v1, v2, new MetadataGraphEdge("1.1", true, null, null, 2, 1));
        graph.addEdge(v1, v2, new MetadataGraphEdge("1.2", true, null, null, 2, 2));

        // v1-->v3
        graph.addEdge(v1, v3, new MetadataGraphEdge("1.1", true, null, null, 2, 1));
        graph.addEdge(v1, v3, new MetadataGraphEdge("1.2", true, null, null, 4, 2));

        // v3-->v4