*   <dt>{@link BiMap}
 *   <dd>An extension of {@link java.util.Map} that guarantees the uniqueness of its values as well
 *       as that of its keys. This is sometimes called an "invertible map," since the restriction on
 *       values enables it to support an {@linkplain BiMap#inverse inverse view} -- which is another
 *       instance of {@code BiMap}.
 *   <dt>{@link Table}

 *   <dt>{@link BiMap}
 *   <dd>An extension of {@link java.util.Map} that guarantees the uniqueness of its values as well
 *       as that of its keys. This is sometimes called an "invertible map," since the restriction on
 *       values enables it to support an {@linkplain BiMap#inverse inverse view} -- which is another
 *       instance of {@code BiMap}.
 *   <dt>{@link Table}

  }

  @Generates
  static <K, V> BiMap<K, V> generateBimap(@Nullable K key, @Nullable V value) {
    return generateHashBiMap(key, value);
  }

  @Generates
  static <K, V> HashBiMap<K, V> generateHashBiMap(@Nullable K key, @Nullable V value) {
    HashBiMap<K, V> bimap = HashBiMap.create();
    bimap.put(key, value);
    return bimap;
  }

  @Generates

      implements TestMapGenerator<K, V>, DerivedGenerator {

    private final OneSizeTestContainerGenerator<BiMap<K, V>, Entry<K, V>> generator;

    public MapGenerator(
        OneSizeTestContainerGenerator<BiMap<K, V>, Entry<K, V>> oneSizeTestContainerGenerator) {
      this.generator = oneSizeTestContainerGenerator;
    }

    @Override

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.annotations.VisibleForTesting;
import org.jspecify.annotations.Nullable;

/**
 * Bimap with zero or more mappings.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@SuppressWarnings("serial") // uses writeReplace(), not default serialization

import com.google.common.collect.BiMap;
import com.google.common.collect.testing.AbstractMapTester;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map.Entry;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;
import org.junit.Ignore;

/** Skeleton for a tester of a {@code BiMap}. */
@GwtCompatible

    if (map instanceof ImmutableBiMap) {
      @SuppressWarnings("unchecked") // safe since map is not writable
      ImmutableBiMap<K, V> bimap = (ImmutableBiMap<K, V>) map;
      return bimap;
    }

    if (map.isEmpty()) {
      return of();
    }

    ImmutableMap<K, V> immutableMap = ImmutableMap.copyOf(map);

  }

  @Generates
  static <K, V> BiMap<K, V> generateBimap(@Nullable K key, @Nullable V value) {
    return generateHashBiMap(key, value);
  }

  @Generates
  static <K, V> HashBiMap<K, V> generateHashBiMap(@Nullable K key, @Nullable V value) {
    HashBiMap<K, V> bimap = HashBiMap.create();
    bimap.put(key, value);
    return bimap;
  }

  @Generates

      public <K extends Comparable<K>, V> BiMap<K, V> create(Map<K, V> map) {
        return HashBiMap.create(map);
      }
    },
    ImmutableBiMapImpl {
      @Override
      public <K extends Comparable<K>, V> BiMap<K, V> create(Map<K, V> map) {
        return ImmutableBiMap.copyOf(map);
      }
    };

    @Override
    public abstract <K extends Comparable<K>, V> BiMap<K, V> create(Map<K, V> map);
  }

  public void testIdentityKeySetIteratorRemove() {
    BiMap<Integer, String> bimap =
        new AbstractBiMap<Integer, String>(
            new IdentityHashMap<Integer, String>(), new IdentityHashMap<String, Integer>()) {};
    bimap.put(1, "one");
    bimap.put(2, "two");
    bimap.put(3, "three");
    Iterator<Integer> iterator = bimap.keySet().iterator();
    iterator.next();
    iterator.next();