*/
@DoNotMock("Use the methods in Futures (like immediateFuture) or SettableFuture")
@NullMarked
public interface ListenableFuture<V extends @Nullable Object> extends Future<V> {
  /**
   * Registers a listener to be {@linkplain Executor#execute(Runnable) run} on the given executor.
   * The listener will run when the {@code Future}'s computation is {@linkplain Future#isDone()

 */
@DoNotMock("Use the methods in Futures (like immediateFuture) or SettableFuture")
@NullMarked
public interface ListenableFuture<V extends @Nullable Object> extends Future<V> {
  /**
   * Registers a listener to be {@linkplain Executor#execute(Runnable) run} on the given executor.
   * The listener will run when the {@code Future}'s computation is {@linkplain Future#isDone()

```

#### 4.2 Implementation Tasks
- [ ] Extend lease implementation for directories
- [ ] Implement directory metadata caching
- [ ] Add directory change notification integration
- [ ] Create parent-child lease relationships
- [ ] Implement directory lease break handling
- [ ] Add directory enumeration caching

#### 4.3 Integration Points
- Extend `SmbFile` for directory lease support

import static org.junit.Assert.assertEquals;

public class IOIntegrationTest {

    private static final Logger logger = Logger.getLogger(IOIntegrationTest.class.getName());

    class MockCurlRequest extends CurlRequest {

        MockCurlRequest(Curl.Method method, String url) {
            super(method, url);
        }

        @Override

public class SsoAuthenticatorTest extends UnitFessTestCase {

    private TestSsoAuthenticator authenticator;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        authenticator = new TestSsoAuthenticator();
    }

    // Mock LoginCredentialResolver for testing
    private static class TestLoginCredentialResolver extends FessLoginAssist.LoginCredentialResolver {

   *
   * @since 3.0
   */
  public static <E extends @Nullable Object> SetView<E> symmetricDifference(
      Set<? extends E> set1, Set<? extends E> set2) {
    checkNotNull(set1, "set1");
    checkNotNull(set2, "set2");

    return new SetView<E>() {
      @Override
      public UnmodifiableIterator<E> iterator() {
        Iterator<? extends E> itr1 = set1.iterator();

 * the standard Fess file transformation process with support for various content types.
 *
 * <p>It extends AbstractFessFileTransformer to provide file-specific transformation
 * capabilities while using the appropriate extractor for each document type.</p>
 */
public class FessStandardTransformer extends AbstractFessFileTransformer {
    /**
     * Default constructor.
     */
    public FessStandardTransformer() {

/**
 * A request for installing one or more artifacts in the local repository.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface ArtifactInstallerRequest extends Request<Session> {

    @Nonnull
    Collection<ProducedArtifact> getArtifacts();

    @Nonnull
    static ArtifactInstallerRequestBuilder builder() {
        return new ArtifactInstallerRequestBuilder();
    }

// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@NullMarked
public abstract class AbstractMapTester<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractContainerTester<Map<K, V>, Entry<K, V>> {
  protected Map<K, V> getMap() {
    return container;
  }

  @Override
  protected Collection<Entry<K, V>> actualContents() {

    }
    return String.copyValueOf(tmp);
  }

  // Fast matchers

  /** A matcher for which precomputation will not yield any significant benefit. */
  abstract static class FastMatcher extends CharMatcher {

    @Override
    public final CharMatcher precomputed() {
      return this;
    }

    @Override
    public CharMatcher negate() {
      return new NegatedFastMatcher(this);