/**
   * Returns a proxy instance that implements {@code interfaceType} by dispatching method
   * invocations to {@code handler}. The class loader of {@code interfaceType} will be used to
   * define the proxy class. To implement multiple interfaces or specify a class loader, use {@link
   * Proxy#newProxyInstance}.
   *
   * @throws IllegalArgumentException if {@code interfaceType} does not specify the type of a Java
   *     interface
   */

            })
        .then(onFulfilled, onRejected);
  }
}

/**
 * Subset of the elemental2 IThenable interface without the single-parameter overload, which allows
 * us to implement it using a default implementation in J2cl ListenableFuture.
 */
@JsType(isNative = true, namespace = JsPackage.GLOBAL, name = "IThenable")
interface IThenable<T extends @Nullable Object> {

    // Changes after are not
    list.set(0, 5);

    assertEquals(ImmutableList.of(3, 4), first);
  }

  @J2ktIncompatible // Arrays.asList(...).subList() doesn't implement RandomAccess in J2KT.
  @GwtIncompatible // Arrays.asList(...).subList doesn't implement RandomAccess in GWT
  public void testPartitionRandomAccessInput() {
    Iterable<Integer> source = asList(1, 2, 3);

      int i = 0;
      for (Object e : elements) {
        array[i++] = (Character) e;
      }
      return create(array);
    }

    /**
     * Creates a new collection containing the given elements; implement this method instead of
     * {@link #create(Object...)}.
     */
    protected abstract List<Character> create(Character[] elements);

    @Override
    public Character[] createArray(int length) {

      int i = 0;
      for (Object e : elements) {
        array[i++] = (Double) e;
      }
      return create(array);
    }

    /**
     * Creates a new collection containing the given elements; implement this method instead of
     * {@link #create(Object...)}.
     */
    protected abstract List<Double> create(Double[] elements);

    @Override
    public Double[] createArray(int length) {

 * thought of as overkill; however, it's difficult to determine which proper subset of this massive
 * set would be sufficient to expose any possible bug. Brute force is simpler.
 *
 * <p>To use this class the concrete subclass must implement the {@link
 * IteratorTester#newTargetIterator()} method. This is because it's impossible to test an Iterator
 * without changing its state, so the tester needs a steady supply of fresh Iterators.
 *

      int i = 0;
      for (Object e : elements) {
        array[i++] = (Character) e;
      }
      return create(array);
    }

    /**
     * Creates a new collection containing the given elements; implement this method instead of
     * {@link #create(Object...)}.
     */
    protected abstract List<Character> create(Character[] elements);

    @Override
    public Character[] createArray(int length) {

    try {
      return fromValid(specifier);
    } catch (IllegalArgumentException e) {
      // Since the IAE can originate at several different points inside
      // fromValid(), we implement this method in terms of that one rather
      // than the reverse.

      ParseException parseException = new ParseException("Invalid host specifier: " + specifier, 0);
      parseException.initCause(e);

            immutableCell("three", "tres", 3),
            immutableCell("two", "dos", 4));
  }

  // This function specifically returns a BiPredicate, because Guava7’s Equivalence class does not
  // actually implement BiPredicate, and CollectorTests expects a BiPredicate.
  static <C, E extends @Nullable Object, R extends Iterable<E>>
      BiPredicate<C, C> pairwiseOnResultOf(Function<C, R> arg) {

@J2ObjCIncompatible
@ElementTypesAreNonnullByDefault
abstract class TempFileCreator {
  static final TempFileCreator INSTANCE = pickSecureCreator();

  /**
   * @throws IllegalStateException if the directory could not be created (to implement the contract
   *     of {@link Files#createTempDir()}, such as if the system does not support creating temporary
   *     directories securely
   */
  abstract File createTempDir();