* is the only one in use, but if we encounter nested concatenations, we start a deque of
     * meta-iterators rather than letting the nesting get arbitrarily deep.  This keeps each
     * operation O(1).
     */

    private @Nullable Iterator<? extends Iterator<? extends T>> topMetaIterator;

    // Only becomes nonnull if we encounter nested concatenations.

 *   <li>Static methods named {@code copyOf} (or {@code copyOfSorted}), accepting an existing
 *       collection whose contents should be copied.
 *   <li>A static nested {@code Builder} class which can be used to populate a new immutable
 *       instance.
 * </ul>
 *
 * <h4>Warnings</h4>
 *
 * <ul>

            if (throwException) {
                throw new RuntimeException("Test ingester exception");
            }
            target.put("ingested", "processed");
            return target;
        }
    }

    private static class TestOpenSearchResultList extends OpenSearchResultList<OpenSearchAccessResult> {
        @Override

  }

  // The Maps returned by Maps.filterEntries(), Maps.filterKeys(), and
  // Maps.filterValues() are not tested with removeIf() since Maps are not
  // Iterable.  Those returned by Iterators.filter() and Iterables.filter()
  // are not tested because they are unmodifiable.

  public void testConsumingIterable() {
    // Test data
    List<String> list = new ArrayList<>(asList("a", "b"));

    }

    public void test_ProtwordsUpdater_fileCreationException() {
        // This test verifies that ProtwordsUpdater constructor properly handles exceptions
        // The actual exception handling is tested by ensuring the updater can be created
        // and properly closed even when errors might occur

        protwordsFile.reload(null);

        // Test normal creation and cleanup of ProtwordsUpdater

        `StatsAggregator`. Add nested option, `experimental_stats` (which takes
        a `tf.data.experimen tal.StatsOptions` object), to `tf.data.Options`.
        Deprecates `tf.data.experimental.set_stats_agregator`.
    *   Performance optimizations:
    *   Add `tf.data.experimental.OptimizationOptions()`, to configure options
        to enable `tf.data` performance optimizations. Add nested option,

          && method.getParameterTypes().length != 0 // only the seeded hash functions
          && !method.getName().equals("concatenating") // don't test Hashing.concatenating()
          && !method.getName().equals("goodFastHash") // tested in testGoodFastHashEquals
          && !method.getName().startsWith("hmac")) { // skip hmac functions
        Object[] params1 = new Object[method.getParameterTypes().length];

 * parameter whose declaration or type isn't annotated with an annotation with the simple name
 * {@code Nullable}, {@code CheckForNull}, {@code NullableType}, or {@code NullableDecl}.
 *
 * <p>The tested methods and constructors are invoked -- each time with one parameter being null and
 * the rest not null -- and the test fails if no expected exception is thrown. {@code

     * declare any methods in this enum, converting assertFailsToDecode into a static method that is
     * implemented with a `switch`. I haven't tested that.)
     */
    @GwtIncompatible // decodingStream(Reader)
    DECODING_STREAM {
      @Override
      void assertFailsToDecode(

    Object writeReplace() {
    return super.writeReplace();
  }

  // This class is never actually serialized directly, but we have to make the
  // warning go away (and suppressing would suppress for all nested classes too)
  @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;