@Inject
    private ResolutionErrorHandler resolutionErrorHandler;

    @Inject
    private ArtifactMetadataSource source;

    @Inject
    private PlexusContainer container;

    @Inject
    private LegacySupport legacySupport;

    private final Executor executor;

    public DefaultArtifactResolver() {
        int threads = Integer.getInteger("maven.artifact.threads", 5);

/**
 * Tester for {@code Spliterator} implementations.
 *
 * @since 21.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class SpliteratorTester<E extends @Nullable Object> {
  /** Return type from "contains the following elements" assertions. */
  public interface Ordered {
    /**
     * Attests that the expected values must not just be present but must be present in the order
     * they were given.
     */

    @Inject
    LegacySupport legacySupport;

    @Inject
    @Named("default")
    ArtifactRepositoryLayout repoLayout;

    @Inject
    PlexusContainer container;

    public PlexusContainer getContainer() {
        return container;
    }

    @BeforeEach
    public void setUp() throws Exception {
        RepositorySystemSession repoSession = initRepoSession();

   *
   * <p>The returned supplier is thread-safe. The delegate's {@code get()} method will be invoked at
   * most once unless the underlying {@code get()} throws an exception. The supplier's serialized
   * form does not contain the cached value, which will be recalculated when {@code get()} is called
   * on the deserialized instance.
   *
   * <p>When the underlying delegate throws an exception then this memoizing supplier will keep

    KeySet(ConcurrentMap<?, ?> map) {
      super(map);
    }

    @Override
    public Iterator<K> iterator() {
      return new KeyIterator();
    }

    @Override
    public boolean contains(Object o) {
      return map.containsKey(o);
    }

    @Override
    public boolean remove(Object o) {
      return map.remove(o) != null;
    }
  }

      for (int i = 0; i < startIndex; i++) {
        previousElements.push(nextElements.pop());
      }
    }

    @Override
    public void add(E e) {
      if (!features.contains(IteratorFeature.SUPPORTS_ADD)) {
        throw PermittedMetaException.UOE;
      }

      previousElements.push(e);
      stackWithLastReturnedElementAtTop = null;
    }

    @Override

            KeyPresentBehavior.ANY_PRESENT,
            KeyAbsentBehavior.NEXT_LOWER);
    if (index == -1) {
      return null;
    } else {
      Range<K> range = ranges.get(index);
      return range.contains(key) ? values.get(index) : null;
    }
  }

  @Override
  @CheckForNull
  public Entry<Range<K>, V> getEntry(K key) {
    int index =
        SortedLists.binarySearch(
            ranges,

        @Override
        @J2ktIncompatible // serialization
        Object writeReplace() {
          return super.writeReplace();
        }
      };
    }

    @Override
    public boolean contains(@CheckForNull Object object) {
      if (object instanceof Entry) {
        Entry<?, ?> entry = (Entry<?, ?>) object;
        Object k = entry.getKey();
        Object v = entry.getValue();

   * have the bug.
   *
   * @deprecated This implementation produces incorrect hash values from the {@link
   *     HashFunction#hashString} method if the string contains non-BMP characters. Use {@link
   *     #murmur3_32_fixed(int)} instead.
   */
  @Deprecated
  public static HashFunction murmur3_32(int seed) {

  }

  @Override
  public boolean containsKey(@Nullable Object key) {
    return get(key) != null;
  }

  @Override
  public boolean containsValue(@Nullable Object value) {
    return values().contains(value);
  }

  private transient @Nullable ImmutableSet<Entry<K, V>> cachedEntrySet = null;

  public final ImmutableSet<Entry<K, V>> entrySet() {
    if (cachedEntrySet != null) {
      return cachedEntrySet;