* <p>These methods are kept for convenience and backward compatibility.
 * For more advanced operations, consider using ExtendedPomEditor or DomTrip directly.
 *
 * <h2>Using DomTrip Directly</h2>
 * <p>Many operations can be performed directly using DomTrip's Element API:
 * <pre>{@code
 * // Find child element
 * Element child = parent.child("version").orElse(null);
 *
 * // Check if child exists

   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are
   * undocumented and subject to change.
   *
   * <p>This method is not type-safe, as it may be called on elements that are not mutually
   * comparable.
   *

   * MoreExecutors#directExecutor}. Otherwise, avoid it: See the warnings on the docs for {@code
   * directExecutor}.
   *
   * <p>This is the most general listener interface. For common operations performed using
   * listeners, see {@link Futures}. For a simplified but general listener interface, see {@link
   * Futures#addCallback addCallback()}.
   *

 *
 * <p><b>Warning:</b> Be extremely careful what you do with conceptually large instances (such as
 * {@code ContiguousSet.create(Range.greaterThan(0), DiscreteDomain.integers()}). Certain operations
 * on such a set can be performed efficiently, but others (such as {@link Set#hashCode} or {@link
 * Collections#frequency}) can cause major performance problems.
 *
 * @author Gregory Kick
 * @since 10.0
 */
@GwtCompatible

     * <code>possibleNTDomainOrWorkgroup</code> parameter is <code>true</code> an
     * additional name query will be performed to locate a master browser.
     *
     * @param hostname the hostname to resolve
     * @param possibleNTDomainOrWorkgroup if true, perform additional master browser lookup
     *
     * @return the first resolved address

   */
  @J2ktIncompatible // Thread safety complexity
  ConcurrentMap<K, V> asMap();

  /**
   * Performs any pending maintenance operations needed by the cache. Exactly which activities are
   * performed -- if any -- is implementation-dependent.
   */
  void cleanUp();

   * elements. The generated map is sorted by the natural ordering of the keys.
   *
   * <p>If the mapped keys contain duplicates, an {@code IllegalArgumentException} is thrown when
   * the collection operation is performed. (This differs from the {@code Collector} returned by
   * {@link Collectors#toMap(Function, Function)}, which throws an {@code IllegalStateException}.)
   *
   * @since NEXT
   */

   *
   * <p><b>Note:</b> Despite what the method name suggests, if {@code map} is an {@code
   * ImmutableClassToInstanceMap}, no copy will actually be performed.
   *
   * @throws NullPointerException if any key or value in {@code map} is null
   * @throws ClassCastException if any value is not an instance of the type specified by its key
   */

            } finally {
                executor.shutdown();
                executor.awaitTermination(5, TimeUnit.SECONDS);
            }
        }
    }

    /**
     * Test that search operations can be performed while searchers are being registered.
     * Verifies CopyOnWriteArrayList's snapshot iteration behavior.
     */
    @Test
    public void test_searchWhileRegisteringSearchers() throws Exception {

        //return OptionalThing.of(fessConfig.getCookieRememberMeFessKey());
        return OptionalThing.empty();
    }

    /**
     * Saves the login history for the given user.
     * This operation is performed asynchronously.
     *
     * @param user the user entity
     * @param userBean the user bean
     * @param option the login specified option
     */
    @Override