public class TimestampConverterTest {

    /**
     * @throws Exception
     */
    @Test
    public void testGetAsObjectAndGetAsString() throws Exception {
        final TimestampConverter converter = new TimestampConverter("yyyy/MM/dd HH:mm:ss");
        final java.sql.Timestamp result = (java.sql.Timestamp) converter.getAsObject("2008/12/31 12:34:56");
        System.out.println(result);

    return new OrderedPermutationCollection<E>(elements, comparator);
  }

  private static final class OrderedPermutationCollection<E> extends AbstractCollection<List<E>> {
    final ImmutableList<E> inputList;
    final Comparator<? super E> comparator;
    final int size;

    OrderedPermutationCollection(Iterable<E> input, Comparator<? super E> comparator) {

      CollectorTester<T, A, R> of(
          Collector<T, A, R> collector, BiPredicate<? super R, ? super R> equivalence) {
    return new CollectorTester<>(collector, equivalence);
  }

  private final Collector<T, A, R> collector;
  private final BiPredicate<? super R, ? super R> equivalence;

  private CollectorTester(
      Collector<T, A, R> collector, BiPredicate<? super R, ? super R> equivalence) {
    this.collector = checkNotNull(collector);

     */
    @Override
    protected Extractor getExtractor(final ResponseData responseData) {
        final ExtractorFactory extractorFactory = ComponentUtil.getExtractorFactory();
        if (extractorFactory == null) {
            throw new FessSystemException("Could not find extractorFactory.");
        }
        final Extractor extractor = extractorFactory.getExtractor(responseData.getMimeType());

  }

  private static final class BiMapPair<K, V> implements Serializable {
    final BiMap<K, V> forward;
    final BiMap<V, K> backward;

    BiMapPair(BiMap<K, V> original) {
      this.forward = original;
      this.backward = original.inverse();
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**

     */
    public static <T> Iterable<Indexed<T>> indexed(final Iterator<T> iterator) {
        assertArgumentNotNull("iterator", iterator);

        return () -> new IndexedIterator<>(iterator);
    }

    /**
     * Constructs an instance.
     *
     * @param iterator the iterator (must not be {@literal null})
     */
    public IndexedIterator(final Iterator<T> iterator) {

  }

  private static final class WrappedCallable<T> implements Callable<T> {
    private final Callable<T> delegate;

    WrappedCallable(Callable<T> delegate) {
      this.delegate = delegate;
    }

    @Override
    public T call() throws Exception {
      return delegate.call();
    }
  }

  private static final class WrappedRunnable implements Runnable {

    public void functionScore(OperatorCall<SearchLogCQ> queryLambda, ScoreFunctionCall<ScoreFunctionCreator<SearchLogCQ>> functionsLambda,
            final ConditionOptionCall<FunctionScoreQueryBuilder> opLambda) {
        SearchLogCQ cq = new SearchLogCQ();
        queryLambda.callback(cq);
        final Collection<FilterFunctionBuilder> list = new ArrayList<>();
        if (functionsLambda != null) {

        // K must actually be K0, since enums are effectively final
        // (their subclasses are inaccessible)
        return (Map<K, Collection<V>>) new EnumMap<K0, Collection<V>>(keyClass);
      }
    };
  }

  private static final class ArrayListSupplier<V extends @Nullable Object>
      implements Supplier<List<V>>, Serializable {
    private final int expectedValuesPerKey;

        // K must actually be K0, since enums are effectively final
        // (their subclasses are inaccessible)
        return (Map<K, Collection<V>>) new EnumMap<K0, Collection<V>>(keyClass);
      }
    };
  }

  private static final class ArrayListSupplier<V extends @Nullable Object>
      implements Supplier<List<V>>, Serializable {
    private final int expectedValuesPerKey;