*/
    @SuppressWarnings("unchecked")
    public static Map<String, Object> getMap(final Map<String, Object> map, final String key) {
        final Object value = map.get(key);
        if (value instanceof Map) {
            return (Map<String, Object>) value;
        }
        return null;
    }

    /**

    return delegate.isEmpty();
  }

  @Override
  public boolean equals(@Nullable Object object) {
    if (object == this) {
      return true;
    }
    if (object instanceof ImmutableEnumSet) {
      object = ((ImmutableEnumSet<?>) object).delegate;
    }
    return delegate.equals(object);
  }

  @Override
  boolean isHashCodeFast() {
    return true;
  }

  }

  @Override
  public boolean contains(@Nullable Object rowKey, @Nullable Object columnKey) {
    return delegate().contains(rowKey, columnKey);
  }

  @Override
  public boolean containsColumn(@Nullable Object columnKey) {
    return delegate().containsColumn(columnKey);
  }

  @Override
  public boolean containsRow(@Nullable Object rowKey) {
    return delegate().containsRow(rowKey);
  }

  @Override

   */
  public static <A extends @Nullable Object, B extends @Nullable Object, C extends @Nullable Object>
      Function<A, C> compose(Function<B, C> g, Function<A, ? extends B> f) {
    return new FunctionComposition<>(g, f);
  }

  private static final class FunctionComposition<
          A extends @Nullable Object, B extends @Nullable Object, C extends @Nullable Object>
      implements Function<A, C>, Serializable {

  int size;

  private static final Object OBJECT = new Object();

  @Benchmark
  int builderAdd(int reps) {
    int size = this.size;
    int dummy = 0;
    for (int rep = 0; rep < reps; rep++) {
      ImmutableList.Builder<Object> builder = ImmutableList.builder();
      for (int i = 0; i < size; i++) {
        builder.add(OBJECT);
      }
      dummy += builder.build().size();
    }

  static class SuperClass {
    final List<Object> notOverriddenInSubclassEvents = new ArrayList<>();
    final List<Object> overriddenNotAnnotatedInSubclassEvents = new ArrayList<>();
    final List<Object> overriddenAndAnnotatedInSubclassEvents = new ArrayList<>();
    final List<Object> differentlyOverriddenNotAnnotatedInSubclassBadEvents = new ArrayList<>();

  }

  @Override
  public boolean equals(@Nullable Object object) {
    return object == this || delegate().equals(object);
  }

  @Override
  public int hashCode() {
    return delegate().hashCode();
  }

  /**
   * A sensible default implementation of {@link #add(Object)}, in terms of {@link #add(int,
   * Object)}. If you override {@link #add(int, Object)}, you may wish to override {@link

   */
  protected int standardCount(@Nullable Object object) {
    for (Entry<?> entry : this.entrySet()) {
      if (Objects.equals(entry.getElement(), object)) {
        return entry.getCount();
      }
    }
    return 0;
  }

  /**
   * A sensible definition of {@link #add(Object)} in terms of {@link #add(Object, int)}. If you

                  public Map<TypeToken, Object> create(Object... elements) {
                    ImmutableTypeToInstanceMap.Builder<Object> builder =
                        ImmutableTypeToInstanceMap.builder();
                    for (Object object : elements) {
                      Entry<?, ?> entry = (Entry<?, ?>) object;
                      builder.put((TypeToken) entry.getKey(), entry.getValue());

    }

    @Test
    public void testGetMap() {
        Map<String, Object> inner = new HashMap<>();
        inner.put("innerKey", "innerValue");

        Map<String, Object> map = new HashMap<>();
        map.put("nested", inner);

        Map<String, Object> result = MapValueExtractor.getMap(map, "nested");
        assertNotNull(result);