inverseFeatures.add(MapFeature.REJECTS_DUPLICATES_AT_CREATION);

    return inverseFeatures;
  }

  // TODO(lowasser): can we eliminate the duplication from MapTestSuiteBuilder here?

  private static Set<Feature<?>> computeValuesSetFeatures(Set<Feature<?>> mapFeatures) {
    Set<Feature<?>> valuesCollectionFeatures = computeCommonDerivedCollectionFeatures(mapFeatures);

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof TypeParameterSignature) {
        TypeParameterSignature other = (TypeParameterSignature) obj;
        /*
         * The name is here only for display purposes; <E extends Number> and <T
         * extends Number> are equivalent.
         */
        return bounds.equals(other.bounds);
      }

      return false;
    }

    @Override

 * to unsigned arithmetic in all cases except:
 *
 * <ul>
 *   <li>comparisons (signed values can be negative)
 *   <li>division (avoided here)
 *   <li>shifting (right shift must be unsigned)
 * </ul>
 *
 * @author ******@****.*** (Kyle Maddison)
 * @author ******@****.*** (Geoff Pike)
 */

  public final Object[] toArray() {
    return toArray(EMPTY_ARRAY);
  }

  @CanIgnoreReturnValue
  @Override
  /*
   * This suppression is here for two reasons:
   *
   * 1. b/192354773 in our checker affects toArray declarations.
   *
   * 2. `other[size] = null` is unsound. We could "fix" this by requiring callers to pass in an

  private Chars() {}

  /**
   * The number of bytes required to represent a primitive {@code char} value.
   *
   * <p>Prefer {@link Character#BYTES} instead.
   */
  // We don't use Character.BYTES here because it's not available under J2KT.
  public static final int BYTES = Character.SIZE / Byte.SIZE;

  /**
   * Returns a hash code for {@code value}; obsolete alternative to {@link
   * Character#hashCode(char)}.
   *

  private Shorts() {}

  /**
   * The number of bytes required to represent a primitive {@code short} value.
   *
   * <p>Prefer {@link Short#BYTES} instead.
   */
  // The constants value gets inlined here.
  @SuppressWarnings("AndroidJdkLibsChecker")
  public static final int BYTES = Short.BYTES;

  /**
   * The largest power of two that can be represented as a {@code short}.
   *
   * @since 10.0
   */

  private Shorts() {}

  /**
   * The number of bytes required to represent a primitive {@code short} value.
   *
   * <p>Prefer {@link Short#BYTES} instead.
   */
  // The constants value gets inlined here.
  @SuppressWarnings("AndroidJdkLibsChecker")
  public static final int BYTES = Short.BYTES;

  /**
   * The largest power of two that can be represented as a {@code short}.
   *
   * @since 10.0
   */

        // during the process, though we can't directly test the lock state

        // When
        try {
            curtainBeforeHook.processDBFluteSystem();

            // Then - if we get here without exception, the unlock/lock worked
            DfFinalTimeZoneProvider provider = getDBFluteSystemTimeZoneProvider();
            // Provider might be null due to reflection limitations, which is ok

  public void testTimeoutOnGetWorksCorrectly() throws InterruptedException, ExecutionException {

    // The task thread waits for the latch, so we expect a timeout here.
    try {
      future.get(20, MILLISECONDS);
      fail("Should have timed out trying to get the value.");
    } catch (TimeoutException expected) {
    } finally {
      latch.countDown();
    }
  }

  // TODO(cpovirk): consider using the logger associated with listener.getClass().
  private static final LazyLogger logger = new LazyLogger(ListenerCallQueue.class);

  // TODO(chrisn): promote AppendOnlyCollection for use here.
  private final List<PerListenerQueue<L>> listeners =
      Collections.synchronizedList(new ArrayList<PerListenerQueue<L>>());

  /** Method reference-compatible listener event. */
  interface Event<L> {