if (next == null) {
        throw new NoSuchElementException();
      }
      current = next;
      seenKeys.add(current.getKey());
      do { // skip ahead to next unseen key
        next = next.next;
      } while ((next != null) && !seenKeys.add(next.getKey()));
      return current.getKey();
    }

    @Override
    public void remove() {
      checkForConcurrentModification();

    public void remove() {
      checkRemove(lastReturned != null);
      MapMakerInternalMap.this.remove(lastReturned.getKey());
      lastReturned = null;
    }
  }

  final class KeyIterator extends HashIterator<K> {

    @Override
    public K next() {
      return nextEntry().getKey();
    }
  }

  final class ValueIterator extends HashIterator<V> {

    @Override

      return new WrappedSortedSet(
          getKey(),
          getSortedSetDelegate().headSet(toElement),
          (getAncestor() == null) ? this : getAncestor());
    }

    @Override
    public SortedSet<V> subSet(@ParametricNullness V fromElement, @ParametricNullness V toElement) {
      refreshIfEmpty();
      return new WrappedSortedSet(
          getKey(),

    }

    @Override
    public ArtifactRepositoryPolicy getSnapshots() {
        return userLocalArtifactRepository.getSnapshots();
    }

    @Override
    public String getKey() {
        return userLocalArtifactRepository.getKey();
    }

    @Override
    public String getUrl() {
        return userLocalArtifactRepository.getUrl();
    }

    @Override
    public int hashCode() {

                    final Boolean b = (Boolean) xObj.value();
                    putResultDataBody(dataMap, entry.getKey(), b.toString());
                    break;
                case NUMBER:
                    final Number d = (Number) xObj.value();
                    putResultDataBody(dataMap, entry.getKey(), d.toString());
                    break;
                case STRING:

    if (entry == null) {
      throw new NoSuchElementException();
    } else {
      return entry.getKey();
    }
  }

  @Override
  @ParametricNullness
  public K lastKey() {
    Entry<K, V> entry = lastEntry();
    if (entry == null) {
      throw new NoSuchElementException();
    } else {
      return entry.getKey();
    }
  }

  @Override
  public @Nullable Entry<K, V> lowerEntry(@ParametricNullness K key) {

            for (Entry<Range<Integer>, Integer> entry : rangeMap.asMapOfRanges().entrySet()) {
              if (entry.getKey().isConnected(subRange)
                  && !entry.getKey().intersection(subRange).isEmpty()) {
                expectedBuilder.put(entry.getKey().intersection(subRange), entry.getValue());
              }
            }

            Metadata metadata = it.next();
            if (metadata instanceof VersionsMetadata versionsMetadata) {
                it.remove();
                processedVersions.put(versionsMetadata.getKey(), versionsMetadata);
            }
        }
    }

    @Override
    public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
        return Collections.emptyList();
    }

            if (logger.isDebugEnabled()) {
                logger.debug("Checking path: {} against entry: {}", path, entry.getKey());
            }
            if (path.startsWith(entry.getKey())) {
                return entry.getValue();
            }
        }
        return null;
    }

            + "a null element in an entry counts as having a hash of zero).",
        expectedHashCode,
        getMap().hashCode());
  }

  private static int hash(Entry<?, ?> e) {
    return (e.getKey() == null ? 0 : e.getKey().hashCode())
        ^ (e.getValue() == null ? 0 : e.getValue().hashCode());
  }