private final ImmutableMap<K, V> map;

  ImmutableMapKeySet(ImmutableMap<K, V> map) {
    this.map = map;
  }

  @Override
  public int size() {
    return map.size();
  }

  @Override
  public UnmodifiableIterator<K> iterator() {
    return map.keyIterator();
  }

  @Override
  public boolean contains(@Nullable Object object) {
    return map.containsKey(object);
  }

  @Override

            return buckets.stream().map(e -> {
                final Map<String, Object> map = new HashMap<>();
                map.put(ID, Base64.getUrlEncoder().encodeToString(e.getKeyAsString().getBytes(StandardCharsets.UTF_8)));
                map.put(KEY, e.getKeyAsString());
                map.put(COUNT, e.getDocCount());
                return map;
            }).collect(Collectors.toList());

    cast(key, value);
    return super.put(key, value);
  }

  @Override
  public void putAll(Map<? extends Class<? extends @NonNull B>, ? extends B> map) {
    Map<Class<? extends @NonNull B>, B> copy = new LinkedHashMap<>(map);
    for (Entry<? extends Class<? extends @NonNull B>, B> entry : copy.entrySet()) {
      cast(entry.getKey(), entry.getValue());
    }

        .addEqualityGroup(Functions.forMap(map))
        .addEqualityGroup(Functions.forMap(map, null))
        .addEqualityGroup(Functions.forMap(map, 43))
        .testEquals();
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testForMapWithDefault_includeSerializable() {
    Map<String, Integer> map = new HashMap<>();
    map.put("One", 1);
    map.put("Three", 3);

  /**
   * Returns a view of this range map as an unmodifiable {@code Map<Range<K>, V>}. Modifications to
   * this range map are guaranteed to read through to the returned {@code Map}.
   *
   * <p>The returned {@code Map} iterates over entries in ascending order of the bounds of the
   * {@code Range} entries.
   *
   * <p>It is guaranteed that no empty ranges will be in the returned {@code Map}.
   */
  Map<Range<K>, V> asMapOfRanges();

            public RescorerBuilder<?> evaluate(Map<String, Object> params) {
                if (params == null) {
                    return null;
                }

                // Check for nested map
                if (params.containsKey("nested") && params.get("nested") instanceof Map) {
                    @SuppressWarnings("unchecked")
                    Map<String, Object> nestedMap = (Map<String, Object>) params.get("nested");

# o isCheckDbCommentDiff: (NotRequired - Default false)
# o isCheckProcedureDiff: (NotRequired - Default false)
# o loadDataReverseMap: (NotRequired - Default map:{})
# o schemaSyncCheckMap: (NotRequired - Default map:{})
# o propertiesHtmlMap: (NotRequired - Default map:{})
#
# Example:
# map:{
#     ; documentOutputDirectory = ./output/doc
#     ; aliasDelimiterInDbComment = :
#     ; isDbCommentOnAliasBasis = true

        assertFalse(fieldConfigs.getConfig("foo").map(FieldConfigs.Config::isOverwrite).orElse(false));
    }

    @Test
    public void test_cache() {
        final Map<String, String> params = Maps.of("foo", "cache");
        FieldConfigs fieldConfigs = new FieldConfigs(params);
        assertTrue(fieldConfigs.getConfig("test").isEmpty());

    /**
     * Get the environment map.
     * @return The environment map.
     */
    protected Map<String, String> getEnvMap() {
        if (envMap != null) {
            return envMap;
        }
        return System.getenv();
    }

    /**
     * Set the environment map.
     * @param envMap The environment map.
     */
    public void setEnvMap(final Map<String, String> envMap) {

  }

  public void testKeySet() {
    Map<String, Integer> map = create();
    Set<String> keySet = map.keySet();
    assertTrue(keySet instanceof SynchronizedSet);
    assertThat(((SynchronizedSet<?>) keySet).mutex).isSameInstanceAs(mutex);
  }

  public void testValues() {
    Map<String, Integer> map = create();
    Collection<Integer> values = map.values();