import java.util.Map;
import org.jspecify.annotations.Nullable;

/**
 * Implementation of ImmutableBiMap backed by a pair of JDK HashMaps, which have smartness
 * protecting against hash flooding.
 */
@GwtIncompatible
final class JdkBackedImmutableBiMap<K, V> extends ImmutableBiMap<K, V> {
  static <K, V> ImmutableBiMap<K, V> create(int n, @Nullable Entry<K, V>[] entryArray) {

     * @param defaultReply the default reply value
     * @return the string entered by the user
     * @throws PrompterException if an exception occurs
     */
    @Nonnull
    String prompt(@Nullable String message, @Nullable List<String> possibleValues, @Nullable String defaultReply)
            throws PrompterException;

    /**
     * Prompts the user for a password.
     *
     * @param message the message to display

   */
  static <T extends @Nullable Object> T[] toArrayImpl(
      @Nullable Object[] src, int offset, int len, T[] dst) {
    checkPositionIndexes(offset, offset + len, src.length);
    if (dst.length < len) {
      dst = newArray(dst, len);
    } else if (dst.length > len) {
      @Nullable Object[] unsoundlyCovariantArray = dst;
      unsoundlyCovariantArray[len] = null;
    }

import java.util.Spliterator;
import java.util.Spliterators;
import org.jspecify.annotations.Nullable;

/**
 * A skeleton {@code Multimap} implementation, not necessarily in terms of a {@code Map}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
abstract class AbstractMultimap<K extends @Nullable Object, V extends @Nullable Object>
    implements Multimap<K, V> {
  @Override
  public boolean isEmpty() {

            Tables.<@Nullable Object, @Nullable Object, @Nullable Object>immutableCell(
                null, null, null))
        .addEqualityGroup(
            Tables.<String, @Nullable Object, @Nullable Object>immutableCell("bar", null, null))
        .addEqualityGroup(
            Tables.<@Nullable Object, Integer, @Nullable Object>immutableCell(null, 2, null))
        .addEqualityGroup(

   *
   * @since 19.0
   */
  public static <K, V> RemovalNotification<K, V> create(
      @Nullable K key, @Nullable V value, RemovalCause cause) {
    return new RemovalNotification<>(key, value, cause);
  }

  private RemovalNotification(@Nullable K key, @Nullable V value, RemovalCause cause) {
    super(key, value);
    this.cause = checkNotNull(cause);
  }

    }

    @Override
    Map<R, @Nullable V> getValue(int index) {
      return new Column(index);
    }

    @Override
    Map<R, @Nullable V> setValue(int index, Map<R, @Nullable V> newValue) {
      throw new UnsupportedOperationException();
    }

    @Override
    public @Nullable Map<R, @Nullable V> put(C key, Map<R, @Nullable V> value) {
      throw new UnsupportedOperationException();

    return super.containsAll(collection);
  }

  @Override
  public Iterator<E> iterator() {
    return asList(contents).iterator();
  }

  @Override
  public @Nullable Object[] toArray() {
    @Nullable Object[] result = new @Nullable Object[contents.length];
    arraycopy(contents, 0, result, 0, contents.length);
    return result;
  }

  /*

  private final transient ImmutableEntry<E>[] entries;
  private final transient @Nullable ImmutableEntry<?>[] hashTable;
  private final transient int size;
  private final transient int hashCode;

  @LazyInit private transient @Nullable ImmutableSet<E> elementSet;

  private RegularImmutableMultiset(
      ImmutableEntry<E>[] entries,
      @Nullable ImmutableEntry<?>[] hashTable,
      int size,
      int hashCode,

  }

  @Override
  public final <T extends @Nullable Object> Future<T> submit(Callable<T> task) {
    return delegate.submit(wrapTask(checkNotNull(task)));
  }

  @Override
  public final Future<?> submit(Runnable task) {
    return delegate.submit(wrapTask(task));
  }

  @Override
  public final <T extends @Nullable Object> Future<T> submit(
      Runnable task, @ParametricNullness T result) {