* be run against that class.
 *
 * @author George van den Driessche
 */
@GwtCompatible
public final class TesterRequirements {
  private final Set<Feature<?>> presentFeatures;
  private final Set<Feature<?>> absentFeatures;

  public TesterRequirements(Set<Feature<?>> presentFeatures, Set<Feature<?>> absentFeatures) {
    this.presentFeatures = Helpers.copyToSet(presentFeatures);

@GwtCompatible(emulated = true)
public class UnsignedIntsTest extends TestCase {
  private static final long[] UNSIGNED_INTS = {
    0L,
    1L,
    2L,
    3L,
    0x12345678L,
    0x5a4316b8L,
    0x6cf78a4bL,
    0xff1a618bL,
    0xfffffffdL,
    0xfffffffeL,
    0xffffffffL
  };

  private static final int LEAST = (int) 0L;
  private static final int GREATEST = (int) 0xffffffffL;

  public void testCheckedCast() {

   *     key
   */
  public static <V> CacheLoader<Object, V> from(Supplier<V> supplier) {
    return new SupplierToCacheLoader<>(supplier);
  }

  private static final class FunctionToCacheLoader<K, V> extends CacheLoader<K, V>
      implements Serializable {
    private final Function<K, V> computingFunction;

    public FunctionToCacheLoader(Function<K, V> computingFunction) {

  @GwtIncompatible // java.lang.reflect
  @CheckForNull
  private static final Object jla = getJLA();

  /**
   * The "getStackTraceElementMethod" method, only available on some JDKs so we use reflection to
   * find it when available. When this is null, use the slow way.
   */
  @J2ktIncompatible
  @GwtIncompatible // java.lang.reflect
  @CheckForNull

  @GwtIncompatible // java.lang.reflect
  @CheckForNull
  private static final Object jla = getJLA();

  /**
   * The "getStackTraceElementMethod" method, only available on some JDKs so we use reflection to
   * find it when available. When this is null, use the slow way.
   */
  @J2ktIncompatible
  @GwtIncompatible // java.lang.reflect
  @CheckForNull

          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);

    EnumBiMap<K, V> bimap =
        create(inferKeyTypeOrObjectUnderJ2cl(map), inferValueTypeOrObjectUnderJ2cl(map));
    bimap.putAll(map);
    return bimap;
  }

  private EnumBiMap(Class<K> keyTypeOrObjectUnderJ2cl, Class<V> valueTypeOrObjectUnderJ2cl) {
    super(
        new EnumMap<K, V>(keyTypeOrObjectUnderJ2cl), new EnumMap<V, K>(valueTypeOrObjectUnderJ2cl));

  private final char[][] replacements;
  // The number of elements in the replacement array.
  private final int replacementsLength;
  // The first code point in the safe range.
  private final int safeMin;
  // The last code point in the safe range.
  private final int safeMax;

  // Cropped values used in the fast path range checks.
  private final char safeMinChar;

  }

  @Override
  public int hashCode() {
    return 0x79a31aac;
  }

  @Override
  public String toString() {
    return "Optional.absent()";
  }

  private Object readResolve() {
    return INSTANCE;
  }

  private static final long serialVersionUID = 0;

  }

  @Override
  public int hashCode() {
    return 0x79a31aac;
  }

  @Override
  public String toString() {
    return "Optional.absent()";
  }

  private Object readResolve() {
    return INSTANCE;
  }

  private static final long serialVersionUID = 0;