return equivalence.equivalent(this.reference, that.reference);
        }
      }
      return false;
    }

    /** Returns the result of {@link Equivalence#hash(Object)} applied to the wrapped reference. */
    @Override
    public int hashCode() {
      return equivalence.hash(reference);
    }

    /**

        }
        if (list.isEmpty()) {
            logger.log("WCL0014", rootPackage);
            return EMPTY_ARRAY;
        }
        return list.toArray(new Traverser[list.size()]);
    }

    /**
     * Creates and returns a {@link Traverser} for handling the specified URL.
     * <p>
     * Returns <code>null</code> if the protocol of the URL is unknown.
     * </p>
     *
     * @param url

    super(directed);
  }

  /** Returns a {@link GraphBuilder} for building directed graphs. */
  public static GraphBuilder<Object> directed() {
    return new GraphBuilder<>(true);
  }

  /** Returns a {@link GraphBuilder} for building undirected graphs. */
  public static GraphBuilder<Object> undirected() {
    return new GraphBuilder<>(false);
  }

  /**

        if (StringUtil.isEmpty(className)) {
            return null;
        }
        try {
            return (Class<T>) Class.forName(className, true, loader);
        } catch (final Throwable ignore) {
            return null;
        }
    }

    /**
     * If the class is a primitive type, returns its wrapper class.
     *
     * @param className

  /**
   * Returns the result of subtracting this and {@code val}. If the result would have more than 64
   * bits, returns the low 64 bits of the result.
   *
   * @since 14.0
   */
  public UnsignedLong minus(UnsignedLong val) {
    return fromLongBits(this.value - checkNotNull(val).value);
  }

  /**
   * Returns the result of multiplying this and {@code val}. If the result would have more than 64

   * and {@link #isVertical} methods return {@code false} and the {@link #slope}, and {@link
   * #transform} methods all return {@link Double#NaN}. The {@link #inverse} method returns the same
   * instance.
   */
  public static LinearTransformation forNaN() {
    return NaNLinearTransformation.INSTANCE;
  }

  /** Returns whether this is a vertical transformation. */

For the more details, see the implementation code in [GsaApiManager](/src/main/java/org/codelibs/fess/api/gsa/GsaApiManager.java).

### Google Site Search (GSS) / Google Custom Search (GSE)

    super(directed);
  }

  /** Returns a {@link ValueGraphBuilder} for building directed graphs. */
  public static ValueGraphBuilder<Object, Object> directed() {
    return new ValueGraphBuilder<>(true);
  }

  /** Returns a {@link ValueGraphBuilder} for building undirected graphs. */
  public static ValueGraphBuilder<Object, Object> undirected() {
    return new ValueGraphBuilder<>(false);
  }

  /**

  }

  /**
   * Returns an iterator over the cache's current entries. This iterator doesn't throw
   * `ConcurrentModificationException`, but if new entries are added while iterating, those new
   * entries will not be returned by the iterator. If existing entries are removed during iteration,
   * they will be absent (unless they were already returned).
   *

   * @throws NoSuchElementException if the iteration has no more elements according to {@link
   *     #hasNext()}
   */
  @ParametricNullness
  E peek();

  /**
   * {@inheritDoc}
   *
   * <p>The objects returned by consecutive calls to {@link #peek()} then {@link #next()} are
   * guaranteed to be equal to each other.
   */
  @CanIgnoreReturnValue
  @Override
  @ParametricNullness
  E next();

  /**