public final String join(
      @Nullable Object first, @Nullable Object second, @Nullable Object... rest) {
    return join(iterable(first, second, rest));
  }

  /**
   * Returns a joiner with the same behavior as this one, except automatically substituting {@code
   * nullText} for any provided null elements.
   */
  public Joiner useForNull(String nullText) {
    checkNotNull(nullText);
    return new Joiner(this) {

import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service class for label types.
 */
public class LabelTypeService extends FessAppService {

    /** The LabelType behavior. */
    @Resource
    protected LabelTypeBhv labelTypeBhv;

    /** The Fess config. */
    @Resource
    protected FessConfig fessConfig;

    /**
     * Default constructor.
     */

        } catch (final MalformedURLException e) {
            throw new CIFSException("Invalid URL " + url, e);
        }
    }

    /**
     * Wraps a new context, allowing subclasses to provide custom wrapping behavior.
     *
     * @param newContext the context to wrap
     * @return the wrapped context
     */
    protected CIFSContext wrap(final CIFSContext newContext) {
        return newContext;
    }

    @Override

    /**
     * Default constructor.
     * Creates a new instance of RelatedContentService.
     */
    public RelatedContentService() {
        super();
    }

    /**
     * Behavior class for RelatedContent entity operations.
     * Provides database access methods for related content management.
     */
    @Resource
    protected RelatedContentBhv relatedContentBhv;

    /**

    Multiset<MultisetHolder> copy = SerializableTester.reserialize(multiset);
    assertEquals(2, copy.size());
    assertThat(copy.iterator().next().member).isSameInstanceAs(copy);
  }

  /*
   * The behavior of toString() and iteration is tested by LinkedHashMultiset,
   * which shares a lot of code with HashMultiset and has deterministic
   * iteration order.
   */

import java.util.concurrent.ExecutionException;
import org.jspecify.annotations.Nullable;

/**
 * A cache which forwards all its method calls to another cache. Subclasses should override one or
 * more methods to modify the behavior of the backing cache as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * @author Charles Fry
 * @since 10.0
 */
@GwtIncompatible

public class BoostDocumentRuleService extends FessAppService {
    /**
     * Default constructor for BoostDocumentRuleService.
     */
    public BoostDocumentRuleService() {
        super();
    }

    /** Database behavior for boost document rule operations. */
    @Resource
    protected BoostDocumentRuleBhv boostDocumentRuleBhv;

    /** Fess configuration. */
    @Resource
    protected FessConfig fessConfig;

    /**

 */
public class PathMappingService extends FessAppService {

    /**
     * Default constructor.
     */
    public PathMappingService() {
        super();
    }

    /** Path mapping behavior. */
    @Resource
    protected PathMappingBhv pathMappingBhv;

    /** Fess configuration. */
    @Resource
    protected FessConfig fessConfig;

    /**
     * Gets the path mapping list with paging.

    Multiset<MultisetHolder> copy = SerializableTester.reserialize(multiset);
    assertEquals(2, copy.size());
    assertThat(copy.iterator().next().member).isSameInstanceAs(copy);
  }

  /*
   * The behavior of toString() and iteration is tested by LinkedHashMultiset,
   * which shares a lot of code with HashMultiset and has deterministic
   * iteration order.
   */

   *
   * {@snippet :
   * b ---- a ---- d
   * |      |
   * |      |
   * e ---- c ---- f
   * }
   *
   * <p>The behavior of this method is undefined if the nodes, or the topology of the graph, change
   * while iteration is in progress.
   *
   * <p>The returned {@code Iterable} can be iterated over multiple times. Every iterator will