expectArrayContentsInOrder(getOrderedElements(), array);
  }

  public void testToArray_emptyArrayOfObject() {
    Object[] in = new Object[0];
    Object[] array = collection.toArray(in);
    assertEquals(
        "toArray(emptyObject[]) should return an array of type Object",
        Object[].class,
        array.getClass());
    assertEquals("toArray(emptyObject[]).length", getNumElements(), array.length);

final class RegularImmutableSet<E> extends ImmutableSet<E> {
  private static final Object[] EMPTY_ARRAY = new Object[0];
  static final RegularImmutableSet<Object> EMPTY =
      new RegularImmutableSet<>(EMPTY_ARRAY, 0, EMPTY_ARRAY, 0, 0);

  // The first `size` elements are non-null.
  @VisibleForTesting final transient @Nullable Object[] elements;
  private final transient int hashCode;

    V onInvoke(Object p0);
  }
}

/** Subset of the elemental2 Promise API. */
@JsType(isNative = true, namespace = JsPackage.GLOBAL, name = "Promise")
class Promise<T extends @Nullable Object> implements IThenable<T> {

  @JsFunction
  interface PromiseExecutorCallbackFn<T extends @Nullable Object> {
    @JsFunction
    interface ResolveCallbackFn<T extends @Nullable Object> {

  private static final class MockEquivalence extends Equivalence<Object> {
    final ImmutableTable.Builder<Object, Object, Boolean> equivalentExpectationsBuilder =
        ImmutableTable.builder();
    final ImmutableMap.Builder<Object, Integer> hashExpectationsBuilder = ImmutableMap.builder();
    ImmutableTable<Object, Object, Boolean> equivalentExpectations;
    ImmutableMap<Object, Integer> hashExpectations;

  private static final class MockEquivalence extends Equivalence<Object> {
    final ImmutableTable.Builder<Object, Object, Boolean> equivalentExpectationsBuilder =
        ImmutableTable.builder();
    final ImmutableMap.Builder<Object, Integer> hashExpectationsBuilder = ImmutableMap.builder();
    ImmutableTable<Object, Object, Boolean> equivalentExpectations;
    ImmutableMap<Object, Integer> hashExpectations;

        // don't merge
    }

    @Override
    protected void mergeBuildBase_Resources(
            BuildBase.Builder builder,
            BuildBase target,
            BuildBase source,
            boolean sourceDominant,
            Map<Object, Object> context) {
        // don't merge
    }

    @Override

	queue        chan *queueItem        // output from workers in order
	err          error                  // global error state, only touched by Reader.Read
	bufferPool   bpool.Pool[[]byte]     // pool of []byte objects for input
	csvDstPool   bpool.Pool[[][]string] // pool of [][]string used for output
	close        chan struct{}          // used for shutting down the splitter before end of stream

    return delegate.isEmpty();
  }

  @Override
  public boolean equals(@Nullable Object object) {
    if (object == this) {
      return true;
    }
    if (object instanceof ImmutableEnumSet) {
      object = ((ImmutableEnumSet<?>) object).delegate;
    }
    return delegate.equals(object);
  }

  @Override
  boolean isHashCodeFast() {
    return true;
  }

  }

  @Override
  public boolean contains(@Nullable Object rowKey, @Nullable Object columnKey) {
    return delegate().contains(rowKey, columnKey);
  }

  @Override
  public boolean containsColumn(@Nullable Object columnKey) {
    return delegate().containsColumn(columnKey);
  }

  @Override
  public boolean containsRow(@Nullable Object rowKey) {
    return delegate().containsRow(rowKey);
  }

  @Override

  static class SuperClass {
    final List<Object> notOverriddenInSubclassEvents = new ArrayList<>();
    final List<Object> overriddenNotAnnotatedInSubclassEvents = new ArrayList<>();
    final List<Object> overriddenAndAnnotatedInSubclassEvents = new ArrayList<>();
    final List<Object> differentlyOverriddenNotAnnotatedInSubclassBadEvents = new ArrayList<>();