// Test with null value
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override
            public String getApiJsonResponseExceptionIncluded() {
                return null;
            }
        });

        return s -> {
            for (UnaryOperator<String> cb : callbacks) {
                String r = cb.apply(s);
                if (r != null) {
                    return r;
                }
            }
            return null;
        };
    }

    public static int toMavenExecutionRequestLoggingLevel(Slf4jConfiguration.Level level) {
        requireNonNull(level, "level");

     *     is null. The builder is left in an invalid state.
     */
    @CanIgnoreReturnValue
    public Builder<K, V> putAll(K key, Iterable<? extends V> values) {
      if (key == null) {
        throw new NullPointerException("null key in entry: null=" + Iterables.toString(values));
      }
      Iterator<? extends V> valuesItr = values.iterator();

    /**
     * Creates a {@link Reader} to read from a file with the specified encoding.
     *
     * @param is
     *            the input stream (must not be {@literal null})
     * @param encoding
     *            the encoding of the input stream (must not be {@literal null} or empty)
     * @return a {@link Reader} to read from the file
     */
    public static InputStreamReader create(final InputStream is, final String encoding) {

    @Test
    public void test_isEmptyArray_withNullElements() {
        assertTrue(searchRequestParams.isEmptyArray(new String[] { null, null }));
    }

    @Test
    public void test_isEmptyArray_withMixedBlankAndNull() {
        assertTrue(searchRequestParams.isEmptyArray(new String[] { null, "", "  " }));
    }

    @Test
    public void test_isEmptyArray_withNonEmptyString() {

  static <T extends Comparable> GeneralRange<T> from(Range<T> range) {
    T lowerEndpoint = range.hasLowerBound() ? range.lowerEndpoint() : null;
    BoundType lowerBoundType = range.hasLowerBound() ? range.lowerBoundType() : OPEN;

    T upperEndpoint = range.hasUpperBound() ? range.upperEndpoint() : null;
    BoundType upperBoundType = range.hasUpperBound() ? range.upperBoundType() : OPEN;
    return new GeneralRange<>(
        Ordering.natural(),

            final SmbFileFilter ff) throws SmbException {
        try (CloseableIterator<SmbResource> it = doEnum(root, wildcard, searchAttributes,
                fnf == null ? null : new ResourceNameFilterWrapper(fnf), ff == null ? null : new ResourceFilterWrapper(ff))) {

            final List<SmbFile> list = new ArrayList<>();
            while (it.hasNext()) {
                try (SmbResource n = it.next()) {

    }

    @Test
    @DisplayName("Test allowChain with null parameter")
    void testAllowChainWithNull() {
        // Given
        when(request.allowChain(null)).thenReturn(false);

        // When
        boolean result = request.allowChain(null);

        // Then
        assertFalse(result);
        verify(request, times(1)).allowChain(null);
    }

    @Test

from fastapi.testclient import TestClient
from pydantic import BaseModel, WithJsonSchema

app = FastAPI()


class Item(BaseModel):
    name: str

    description: Annotated[str | None, WithJsonSchema({"type": ["string", "null"]})] = (
        None
    )

    model_config = {
        "json_schema_extra": {
            "x-something-internal": {"level": 4},
        }
    }


@app.get("/foo", response_model=Item)
def foo():

    public MetadataRetrievalException(String message) {
        this(message, null, null);
    }

    public MetadataRetrievalException(Throwable cause) {
        this(null, cause, null);
    }

    public MetadataRetrievalException(String message, Throwable cause) {
        this(message, cause, null);
    }

    public MetadataRetrievalException(String message, Throwable cause, ArtifactMetadata artifact) {