import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Objects;
import java.util.PriorityQueue;
import java.util.Queue;
import org.jspecify.annotations.NonNull;
import org.jspecify.annotations.Nullable;

/**
 * This class contains static utility methods that operate on or return objects of type {@link

      int maxRunBeforeFallback = maxRunBeforeFallback(hashTable.length);
      int mask = hashTable.length - 1;

      // Invariant: all elements at indices in [knownRunStart, knownRunEnd) are nonnull.
      // If knownRunStart == knownRunEnd, this is vacuously true.
      // When knownRunEnd exceeds hashTable.length, it "wraps", detecting runs around the end
      // of the table.
      int knownRunStart = 0;

          Collection<V> valueCollection = keyToValueCollectionEntry.getValue();
          return CollectSpliterators.map(
              valueCollection.spliterator(),
              Spliterator.DISTINCT | Spliterator.NONNULL,
              (V value) -> immutableEntry(key, value));
        },
        Spliterator.SIZED,
        size());
  }

  @Override
  public void forEach(BiConsumer<? super K, ? super V> action) {

                .getOrDefault(artifact.getArtifactId(), Collections.emptyMap())
                .values()
                .stream()
                .filter(p -> Objects.nonNull(findArtifact(p, artifact, false)))
                .map(MavenProject::getVersion)
                .collect(Collectors.collectingAndThen(Collectors.toList(), Collections::unmodifiableList));
    }

    @Override

import java.util.SortedMap;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicInteger;
import org.jspecify.annotations.NonNull;
import org.jspecify.annotations.Nullable;

/**
 * A comparator, with additional methods to support common operations. This is an "enriched" version

        String[] values = null;
        if (input instanceof String[]) {
            values = (String[]) input;
        } else if (input instanceof List) {
            values = ((List<?>) input).stream().filter(Objects::nonNull).map(Object::toString).toArray(n -> new String[n]);
        } else if (input instanceof String) {
            return input.toString();
        }
        if (values != null) {

     */
    public ImmutableSet<@NonNull E> immutableCopy() {
      // Not using ImmutableSet.copyOf() to avoid iterating thrice (isEmpty, size, iterator).
      int maxSize = maxSize();
      if (maxSize == 0) {
        return ImmutableSet.of();
      }
      ImmutableSet.Builder<@NonNull E> builder = ImmutableSet.builderWithExpectedSize(maxSize);
      for (E element : this) {

  // (which is fortunate because Animal Sniffer doesn't look for @IgnoreJRERequirement on fields)
  static final int SPLITERATOR_CHARACTERISTICS =
      Spliterator.IMMUTABLE | Spliterator.NONNULL | Spliterator.ORDERED;

  ImmutableCollection() {}

  /** Returns an unmodifiable iterator across the elements in this collection. */
  @Override
  public abstract UnmodifiableIterator<E> iterator();

  }

  /**
   * Returns a predicate that evaluates to {@code true} if the object reference being tested is not
   * null.
   *
   * <p><b>Discouraged:</b> Prefer using either {@code x -> x != null} or {@code Objects::nonNull},
   * but note that lambdas and method references do not have human-readable {@link #toString()}
   * representations and are not serializable.
   */
  public static <T extends @Nullable Object> Predicate<T> notNull() {

          Collection<V> valueCollection = keyToValueCollectionEntry.getValue();
          return CollectSpliterators.map(
              valueCollection.spliterator(),
              Spliterator.ORDERED | Spliterator.NONNULL | Spliterator.IMMUTABLE,
              (V value) -> immutableEntry(key, value));
        },
        Spliterator.SIZED | (this instanceof SetMultimap ? Spliterator.DISTINCT : 0),
        size());
  }