return metadata
}

// ParseMetadata extracts all SSE-C related values from the object metadata
// and checks whether they are well-formed. It returns the sealed object key
// on success.
func (ssec) ParseMetadata(metadata map[string]string) (sealedKey SealedKey, err error) {
	// Extract all required values from object metadata
	b64IV, ok := metadata[MetaIV]
	if !ok {

    return delegate().removeAll(key);
  }

  @CanIgnoreReturnValue
  @Override
  public Set<V> replaceValues(@ParametricNullness K key, Iterable<? extends V> values) {
    return delegate().replaceValues(key, values);
  }

  }

  @Override
  public Set<N> predecessors() {
    return Collections.unmodifiableSet(((BiMap<E, N>) inEdgeMap).values());
  }

  @Override
  public Set<N> successors() {
    return Collections.unmodifiableSet(((BiMap<E, N>) outEdgeMap).values());
  }

  @Override
  public Set<E> edgesConnecting(N node) {
    return new EdgesConnecting<>(((BiMap<E, N>) outEdgeMap).inverse(), node);
  }

    } catch (RuntimeException tolerated) {
      // GWT's HashMap.values().removeAll(null) doesn't throws NPE.
    }
  }

  @Override
  public void testValuesRetainAllNullFromEmpty() {
    try {
      super.testValuesRemoveAllNullFromEmpty();
    } catch (RuntimeException tolerated) {
      // GWT's HashMap.values().retainAll(null) doesn't throws NPE.
    }
  }

    return delegate().removeAll(key);
  }

  @CanIgnoreReturnValue
  @Override
  public List<V> replaceValues(@ParametricNullness K key, Iterable<? extends V> values) {
    return delegate().replaceValues(key, values);
  }

  public SortedSet<V> removeAll(@Nullable Object key) {
    return delegate().removeAll(key);
  }

  @Override
  public SortedSet<V> replaceValues(@ParametricNullness K key, Iterable<? extends V> values) {
    return delegate().replaceValues(key, values);
  }

  @Override
  public @Nullable Comparator<? super V> valueComparator() {
    return delegate().valueComparator();
  }

     */
    protected AnnotationUtil() {
    }

    /**
     * Returns the elements of the annotation as a {@link Map} of names and values.
     *
     * @param annotation the annotation (must not be {@literal null})
     * @return a {@link Map} of annotation element names and values
     */
    public static Map<String, Object> getProperties(final Annotation annotation) {
        assertArgumentNotNull("annotation", annotation);

        // Testing through cookie spec creation instead
        // CookieSpec is not directly available for testing
        assertNotNull(cookieResourceProvider);
    }

    // Test with null configuration values
    @Test
    public void test_withNullConfigValues() {
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override

 * create a lightweight concrete subclass only to exercise the inherited
 * behaviour. The tests cover flag manipulation, byte‑buffer operations and
 * static helpers. Edge cases such as null or short arrays and negative
 * values are verified to ensure proper exception handling and byte
 * conversion.
 */
@ExtendWith(MockitoExtension.class)
class NtlmMessageTest {

    /** Lightweight concrete implementation used only for testing. */

		{[]interface{}{[]interface{}{"1", nil, "3"}}, "[1 <nil> 3]"},
	}
	for _, c := range cases {
		if key := ToStringKey(c.values...); key != c.key {
			t.Errorf("%v: expected %v, got %v", c.values, c.key, key)
		}
	}
}

func TestContains(t *testing.T) {
	containsTests := []struct {
		name  string
		elems []string
		elem  string
		out   bool
	}{
		{"exists", []string{"1", "2", "3"}, "1", true},