// just to do everything we can to emphasize the "practically an interface" nature of this class.
public abstract class ImmutableCollection<E> extends AbstractCollection<E> implements Serializable {
  /*
   * We expect SIZED (and SUBSIZED, if applicable) to be added by the spliterator factory methods.

import org.codelibs.fess.thumbnail.ThumbnailManager;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;

public class PurgeThumbnailJobTest extends UnitFessTestCase {

    private PurgeThumbnailJob purgeThumbnailJob;
    private MockThumbnailManager thumbnailManager;

    @Override
    public void setUp() throws Exception {
        super.setUp();

   * thus its value may be legitimately {@code null}.)
   */
  @SuppressWarnings("nullness")
  @ParametricNullness
  static <T extends @Nullable Object> T uncheckedCastNullableTToT(@Nullable T t) {
    return t;
  }

  /**
   * Returns {@code null} cast to any type.
   *

import jcifs.dcerpc.ndr.NdrException;

/**
 * Base class for SMB Witness Protocol RPC messages as defined in MS-SWN specification.
 * This class extends DcerpcMessage to provide witness-specific RPC operations.
 */
public abstract class WitnessRpcMessage extends DcerpcMessage {

    // MS-SWN Witness Protocol Interface UUID and Version
    /** Witness Protocol Interface UUID from MS-SWN specification */

package jcifs.smb1.dcerpc.msrpc;

import jcifs.smb1.smb1.SID;

class LsarSidArrayX extends lsarpc.LsarSidArray {

    LsarSidArrayX(final SID[] sids) {
        this.num_sids = sids.length;
        this.sids = new lsarpc.LsarSidPtr[sids.length];
        for (int si = 0; si < sids.length; si++) {
            this.sids[si] = new lsarpc.LsarSidPtr();
            this.sids[si].sid = sids[si];
        }
    }

   */
  private static final class NoOpService extends AbstractService {
    @Override
    protected void doStart() {
      notifyStarted();
    }

    @Override
    protected void doStop() {
      notifyStopped();
    }
  }

  /** This is never thrown but only used for logging. */
  private static final class EmptyServiceManagerWarning extends Throwable {}

import jakarta.validation.Validation;
import jakarta.validation.Validator;
import jakarta.validation.ValidatorFactory;
import jakarta.validation.groups.Default;

public class CronExpressionTest extends UnitFessTestCase {

    private Validator validator;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        ValidatorFactory factory = Validation.buildDefaultValidatorFactory();

 * thread-safe, even when all of the methods that they depend on are thread-safe.
 *
 * @author Louis Wasserman
 * @since 12.0
 */
@GwtIncompatible
public abstract class ForwardingNavigableSet<E extends @Nullable Object>
    extends ForwardingSortedSet<E> implements NavigableSet<E> {

  /** Constructor for use by subclasses. */
  protected ForwardingNavigableSet() {}

  @Override
  protected abstract NavigableSet<E> delegate();

 */
package org.codelibs.fess.opensearch.config.cbean.cq;

import org.codelibs.fess.opensearch.config.cbean.cq.bs.BsBoostDocumentRuleCQ;

/**
 * @author ESFlute (using FreeGen)
 */
public class BoostDocumentRuleCQ extends BsBoostDocumentRuleCQ {

 */
package org.codelibs.fess.opensearch.config.cbean.cq;

import org.codelibs.fess.opensearch.config.cbean.cq.bs.BsJobLogCQ;

/**
 * @author ESFlute (using FreeGen)
 */
public class JobLogCQ extends BsJobLogCQ {