Stream.<@Nullable Object>of((Object) null).flatMap(unused -> Stream.of("a", "b", "c")));
  }

  private void testMapWithIndex_closeIsPropagated(Stream<String> source) {
    AtomicInteger stringsCloseCount = new AtomicInteger();
    Stream<String> strings = source.onClose(stringsCloseCount::incrementAndGet);
    Stream<String> withIndex = Streams.mapWithIndex(strings, (str, i) -> str + ":" + i);

    withIndex.close();

   * When multiple elements are equivalent according to {@link Comparable#compareTo}, only the first
   * one specified is included.
   *
   * @throws NullPointerException if any element is null
   * @since 3.0 (source-compatible since 2.0)
   */
  @SuppressWarnings("unchecked")
  public static <E extends Comparable<? super E>> ImmutableSortedSet<E> of(
      E e1, E e2, E e3, E e4, E e5, E e6, E... remaining) {

@GwtIncompatible
@J2ObjCIncompatible
@ElementTypesAreNonnullByDefault
public final class FileBackedOutputStream extends OutputStream {
  private final int fileThreshold;
  private final boolean resetOnFinalize;
  private final ByteSource source;

  @GuardedBy("this")
  private OutputStream out;

  @GuardedBy("this")
  @CheckForNull
  private MemoryOutput memory;

  @GuardedBy("this")
  @CheckForNull
  private File file;

  public void testPartition_badSize() {
    List<Integer> source = Collections.singletonList(1);
    try {
      Lists.partition(source, 0);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  public void testPartition_empty() {
    List<Integer> source = Collections.emptyList();
    List<List<Integer>> partitions = Lists.partition(source, 1);
    assertTrue(partitions.isEmpty());

    Iterable<Integer> source = Collections.singleton(1);
    try {
      Iterables.partition(source, 0);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  public void testPartition_empty() {
    Iterable<Integer> source = Collections.emptySet();
    Iterable<List<Integer>> partitions = Iterables.partition(source, 1);
    assertTrue(Iterables.isEmpty(partitions));

    Iterator<Integer> source = singletonIterator(1);
    try {
      Iterators.partition(source, 0);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  public void testPartition_empty() {
    Iterator<Integer> source = Iterators.emptyIterator();
    Iterator<List<Integer>> partitions = Iterators.partition(source, 1);
    assertFalse(partitions.hasNext());
  }

   * the first are ignored.
   *
   * <p>The array {@code others} must not be longer than {@code Integer.MAX_VALUE - 6}.
   *
   * @since 3.0 (source-compatible since 2.0)
   */
  @SafeVarargs // For Eclipse. For internal javac we have disabled this pointless type of warning.
  public static <E> ImmutableSet<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E... others) {

    super(distinctElements);
  }

  @Override
  ObjectCountHashMap<E> newBackingMap(int distinctElements) {
    return new ObjectCountHashMap<>(distinctElements);
  }

  @GwtIncompatible // Not needed in emulated source.
  @J2ktIncompatible
  private static final long serialVersionUID = 0;

          </excludePackageNames>
          <!-- Ignore some tags that are found in Java 11 sources but not recognized... under -source 8, I think it was? I can no longer reproduce the failure. -->
          <tags>
            <tag>
              <name>apiNote</name>
              <placement>X</placement>
            </tag>

   * likewise not type-checked)? Could our single caller do something different?
   */
  @SuppressWarnings({"nullness", "unchecked"})
  static <T extends @Nullable Object> T[] copy(Object[] source, int from, int to, T[] arrayOfType) {
    return Arrays.copyOfRange(source, from, to, (Class<? extends T[]>) arrayOfType.getClass());
  }

  /**
   * Configures the given map maker to use weak keys, if possible; does nothing otherwise (i.e., in