/**
 * Tests for {@code ForwardingNavigableMap}.
 *
 * @author Robert Konigsberg
 * @author Louis Wasserman
 */
@NullUnmarked
public class ForwardingNavigableMapTest extends TestCase {
  static class StandardImplForwardingNavigableMap<K, V> extends ForwardingNavigableMap<K, V> {
    private final NavigableMap<K, V> backingMap;

    StandardImplForwardingNavigableMap(NavigableMap<K, V> backingMap) {
      this.backingMap = backingMap;

/**
 * Interface representing a client for a web crawler.
 * This client is responsible for executing requests and handling responses.
 * It extends {@link AutoCloseable} to allow for resource management.
 */
public interface CrawlerClient extends AutoCloseable {

    /**
     * Sets the initialization parameters for the crawler client.
     *
     * @param params a map containing the initialization parameters

/**
 * {@link ChildUrlsException} is thrown when child URLs are found during crawling.
 * It extends {@link CrawlerSystemException} and holds a set of {@link RequestData}
 * representing the child URLs that caused the exception.
 *
 */
public class ChildUrlsException extends CrawlerSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * The list of child URLs.

 */
package org.codelibs.fess.crawler.exception;

/**
 * An exception indicating that the execution of a process has timed out.
 * This exception extends {@link org.codelibs.fess.crawler.exception.ExtractException}.
 *
 */
public class ExecutionTimeoutException extends ExtractException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new exception with the specified detail message and cause.

/**
 * Exception thrown during sitemaps processing in the crawler.
 * This exception extends {@link org.codelibs.fess.crawler.exception.CrawlerSystemException}
 * and provides constructors for wrapping other exceptions or creating a new exception with a message.
 */
public class SitemapsException extends CrawlerSystemException {
    private static final long serialVersionUID = 1L;

    /**

/**
 * Form class for editing scheduled job configurations in the admin interface.
 * This form extends CreateForm to include fields necessary for updating existing scheduler entries,
 * including tracking information for optimistic locking.
 * Schedulers define automated jobs such as crawling and system maintenance tasks.
 *
 */
public class EditForm extends CreateForm {

    /**
     * Creates a new EditForm instance.
     */

 * @param <I> the type of the iterator ({@link Iterator} or {@link ListIterator})
 * @author Kevin Bourrillion
 * @author Chris Povirk
 */
@GwtCompatible
@NullMarked
abstract class AbstractIteratorTester<E extends @Nullable Object, I extends Iterator<E>> {
  private final Stimulus<E, ? super I>[] stimuli;
  private final Iterator<E> elementsToInsert;
  private final Set<IteratorFeature> features;
  private final List<E> expectedElements;

 * allowing implementations as lambda expressions or method references.</li>
 * <li>{@link Consumer}: Signifies that this type is intended to be implemented
 * or extended by Maven plugins or extensions and consumed by Maven itself.</li>
 * <li>{@link ThreadSafe}: Implies that implementations of this interface must
 * be safe to invoke from multiple threads concurrently.</li>
 * </ul>
 *

/**
 * An object representing the differences between two maps.
 *
 * @author Kevin Bourrillion
 * @since 2.0
 */
@DoNotMock("Use Maps.difference")
@GwtCompatible
public interface MapDifference<K extends @Nullable Object, V extends @Nullable Object> {
  /**
   * Returns {@code true} if there are no differences between the two maps; that is, if the maps are
   * equal.
   */
  boolean areEqual();

  /**

 */
@GwtCompatible
@NullMarked
@Deprecated // Use com.google.common.graph.Traverser instead.
public class TreeTraverserTest extends TestCase {
  private static class Node {
    final char value;

    Node(char value) {
      this.value = value;
    }
  }

  private static final class Tree extends Node {
    final List<Tree> children;

    Tree(char value, Tree... children) {
      super(value);