}

  @Generates
  static <K, V> ImmutableSetMultimap<K, V> generateImmutableSetMultimap(K key, V value) {
    return ImmutableSetMultimap.of(key, value);
  }

  @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) {

  }

  @Generates
  static <K, V> ImmutableSetMultimap<K, V> generateImmutableSetMultimap(K key, V value) {
    return ImmutableSetMultimap.of(key, value);
  }

  @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) {