* test with reference to the same "lock-like object", and then their interactions with that object
 * are choreographed via the various methods on this class.
 *
 * <p>A "lock-like object" is really any object that may be used for concurrency control. If the
 * {@link #callAndAssertBlocks} method is ever called in a test, the lock-like object must have a

      return reference;
    }

    /**
     * Returns {@code true} if {@link Equivalence#equivalent(Object, Object)} applied to the wrapped
     * references is {@code true} and both wrappers use the {@link Object#equals(Object) same}
     * equivalence.
     */
    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj == this) {
        return true;
      }
      if (obj instanceof Wrapper) {

    Set<Object> observed = Sets.newIdentityHashSet(); // for the sake of weakly referenced locks.
    // this gets the stripes with #getAt(index)
    for (int i = 0; i < striped.size(); i++) {
      Object object = striped.getAt(i);
      assertThat(object).isNotNull();
      assertSame(object, striped.getAt(i)); // idempotent
      observed.add(object);
    }

    Set<Object> observed = Sets.newIdentityHashSet(); // for the sake of weakly referenced locks.
    // this gets the stripes with #getAt(index)
    for (int i = 0; i < striped.size(); i++) {
      Object object = striped.getAt(i);
      assertThat(object).isNotNull();
      assertSame(object, striped.getAt(i)); // idempotent
      observed.add(object);
    }

  @GwtIncompatible
  @J2ktIncompatible
    private static void reserializeAndAssert(Object object) throws Exception {
    Object copy = reserialize(object);
    assertEquals(object, copy);
    assertEquals(object.getClass(), copy.getClass());
  }

  @GwtIncompatible
  @J2ktIncompatible
    private static Object reserialize(Object object) throws Exception {
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();

		}

		prefix = retainSlash(prefix)

		for object := range clnt.ListObjects(r.Context(), bucket, minio.ListObjectsOptions{
			Prefix:    prefix,
			Recursive: false,
		}) {
			if object.Err != nil {
				return nil, object.Err
			}

			if object.Key == prefix {
				continue
			}

			isDir := strings.HasSuffix(object.Key, SlashSeparator)
			files = append(files, &minioFileInfo{

      return differences;
    }

    @Override
    public boolean equals(@Nullable Object object) {
      if (object == this) {
        return true;
      }
      if (object instanceof MapDifference) {
        MapDifference<?, ?> other = (MapDifference<?, ?>) object;
        return entriesOnlyOnLeft().equals(other.entriesOnlyOnLeft())

  public void testImmutableSortedMapCopyOfMap() {
    Map<Object, Object> original =
        ImmutableMap.of(new Object(), new Object(), new Object(), new Object());

    assertThrows(ClassCastException.class, () -> ImmutableSortedMap.copyOf(original));
  }

  public void testImmutableSortedSetCopyOfIterable() {
    // false positive: `new Object()` is not equal to `new Object()`
    @SuppressWarnings("DistinctVarargsChecker")

  public void testImmutableSortedMapCopyOfMap() {
    Map<Object, Object> original =
        ImmutableMap.of(new Object(), new Object(), new Object(), new Object());

    assertThrows(ClassCastException.class, () -> ImmutableSortedMap.copyOf(original));
  }

  public void testImmutableSortedSetCopyOfIterable() {
    // false positive: `new Object()` is not equal to `new Object()`
    @SuppressWarnings("DistinctVarargsChecker")

   */
  public static <F extends @Nullable Object, T extends @Nullable Object> Supplier<T> compose(
      Function<? super F, T> function, Supplier<F> supplier) {
    return new SupplierComposition<>(function, supplier);
  }

  private static final class SupplierComposition<
          F extends @Nullable Object, T extends @Nullable Object>
      implements Supplier<T>, Serializable {