public final class CollectorTester<
    T extends @Nullable Object, A extends @Nullable Object, R extends @Nullable Object> {
  /**
   * Creates a {@code CollectorTester} for the specified {@code Collector}. The result of the {@code
   * Collector} will be compared to the expected value using {@link Object#equals}.
   */
  public static <T extends @Nullable Object, A extends @Nullable Object, R extends @Nullable Object>

		content.LastModified = amztime.ISO8601Format(object.ModTime.UTC())
		if object.ETag != "" {
			content.ETag = "\"" + object.ETag + "\""
		}
		content.Size = object.Size
		if object.StorageClass != "" {
			content.StorageClass = filterStorageClass(ctx, object.StorageClass)
		} else {
			content.StorageClass = globalMinioDefaultStorageClass
		}
		if tagErr == ErrNone {

        final List<Object> userRoles = (List<Object>) user.get("roles");
        assertEquals(2, userRoles.size());

        @SuppressWarnings("unchecked")
        final Map<String, Object> permissions = (Map<String, Object>) user.get("permissions");
        assertEquals(true, permissions.get("read"));
        assertEquals(false, permissions.get("write"));
    }

    @Test
    public void test_getOicAuthServerUrl_default() {

    if (length == 0) {
      return new Object[0];
    }
    @Nullable Object[] result = new Object[length];
    arraycopy(elements, offset, result, 0, length);
    return result;
  }

  @CanIgnoreReturnValue
  private static @Nullable Object[] fillArray(Iterable<?> elements, @Nullable Object[] array) {
    int i = 0;
    for (Object element : elements) {
      array[i++] = element;
    }

            throw new StorageException("Failed to upload " + objectName, e);
        }
    }

    /**
     * Downloads an object from the storage system.
     *
     * @param objectName the name of the object to download
     * @param out the output stream to write the object data to
     * @throws StorageException if the download fails
     */

  }

  /**
   * A sensible definition of {@link #subSet(Object, Object)} in terms of the {@link #subSet(Object,
   * boolean, Object, boolean)} method. If you override {@link #subSet(Object, boolean, Object,
   * boolean)}, you may wish to override {@link #subSet(Object, Object)} to forward to this
   * implementation.
   */
  @Override
  protected SortedSet<E> standardSubSet(

  @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();

    return ImmutableList.of();
  }

  @Override
  public String toString() {
    return "[]";
  }

  @Override
  public boolean equals(@Nullable Object object) {
    if (object instanceof Set) {
      Set<?> that = (Set<?>) object;
      return that.isEmpty();
    }
    return false;
  }

  @GwtIncompatible // not used in GWT
  @Override
  boolean isHashCodeFast() {
    return true;

   */
  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 {

  @Override
  protected boolean standardContains(@Nullable Object object) {
    try {
      // any ClassCastExceptions and NullPointerExceptions are caught
      @SuppressWarnings({"unchecked", "nullness"})
      SortedSet<@Nullable Object> self = (SortedSet<@Nullable Object>) this;
      Object ceiling = self.tailSet(object).first();
      return unsafeCompare(comparator(), ceiling, object) == 0;