* @param repositories the list of repositories to validate, may be {@code null}
     * @return the same list if validation passes, or {@code null} if input was {@code null}
     * @throws IllegalArgumentException if the list contains duplicate repositories
     * @throws IllegalArgumentException if the list contains null repository entries
     */
    default List<RemoteRepository> validate(List<RemoteRepository> repositories) {

    private FessMailDeliveryDepartmentCreator creator;
    private FessConfig originalFessConfig;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        originalFessConfig = ComponentUtil.getFessConfig();

        // Set up test configuration
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {

    @DisplayName("Invalid: resolving class by null name throws NPE")
    void testClassForNameWithNull() {
        // Intent: demonstrate defensive behavior with null when resolving this type by name
        assertThrows(NullPointerException.class, () -> Class.forName(null));
    }

    @Test
    @DisplayName("Happy path: class is loadable via fully qualified name")
    void testClassForName() throws Exception {
        // Act

import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;

@Deprecated
class MavenPropertiesLoaderTest {

    @Test
    void testIncludes() throws Exception {
        FileSystem fs = Jimfs.newFileSystem(Configuration.unix());

        Path mavenHome = fs.getPath("/maven");
        Files.createDirectories(mavenHome);
        Path mavenConf = mavenHome.resolve("conf");

        return caught;
      }
      throw new AssertionError(
          "expected to throw " + expectedThrowable.getSimpleName() + " but threw " + t, t);
    }
    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {

        return caught;
      }
      throw new AssertionError(
          "expected to throw " + expectedThrowable.getSimpleName() + " but threw " + t, t);
    }
    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {

        return caught;
      }
      throw new AssertionError(
          "expected to throw " + expectedThrowable.getSimpleName() + " but threw " + t, t);
    }
    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {

import java.util.ArrayList;
import java.util.List;

public class TransformLog4jConfigFilter extends FilterReader {
    public TransformLog4jConfigFilter(Reader in) throws IOException {
        super(new StringReader(transform(in)));
    }

    private static String transform(Reader reader) throws IOException {
        final List<String> inputLines = IOUtils.readLines(reader);
        final List<String> outputLines = skipBlanks(transformConfig(inputLines));

    }

    @Override
    final boolean isDone() {
      return TrustedListenableFutureTask.this.isDone();
    }

    @Override
    @ParametricNullness
    V runInterruptibly() throws Exception {
      return callable.call();
    }

    @Override
    void afterRanInterruptiblySuccess(@ParametricNullness V result) {
      TrustedListenableFutureTask.this.set(result);
    }

            assertEquals(443, Handler.DEFAULT_HTTPS_PORT);
        }

        @Test
        @DisplayName("DEFAULT_HTTPS_PORT should be public static final")
        void testDefaultHttpsPortModifiers() throws NoSuchFieldException {
            // When
            var field = Handler.class.getField("DEFAULT_HTTPS_PORT");

            // Then
            assertTrue(Modifier.isPublic(field.getModifiers()));