final Object result;
    final Throwable throwable;

    Response(String methodName, @Nullable Object result, @Nullable Throwable throwable) {
      this.methodName = methodName;
      this.result = result;
      this.throwable = throwable;
    }

    Object getResult() {
      if (throwable != null) {
        throw new AssertionError(throwable);
      }
      return result;
    }

/** Static utility method for unchecked throwing of any {@link Throwable}. */
@GwtCompatible
final class SneakyThrows<T extends Throwable> {
  /**
   * Throws {@code t} as if it were an unchecked {@link Throwable}.
   *
   * <p>This method is useful primarily when we make a reflective call to a method with no {@code
   * throws} clause: Java forces us to handle an arbitrary {@link Throwable} from that method,

/** Static utility method for unchecked throwing of any {@link Throwable}. */
@GwtCompatible
final class SneakyThrows<T extends Throwable> {
  /**
   * Throws {@code t} as if it were an unchecked {@link Throwable}.
   *
   * <p>This method is useful primarily when we make a reflective call to a method with no {@code
   * throws} clause: Java forces us to handle an arbitrary {@link Throwable} from that method,

   * In the GWT versions of the methods (below), every exceptionType parameter is required to be
   * Class<Throwable>. To handle only certain kinds of exceptions under GWT, you'll need to write
   * your own instanceof tests.
   */

  public final FluentFuture<V> catching(
      Class<Throwable> exceptionType,
      Function<? super Throwable, ? extends V> fallback,
      Executor executor) {

final class Platform {
  static boolean isInstanceOfThrowableClass(Throwable t, Class<? extends Throwable> expectedClass) {
    /*
     * This method is used only by CatchingFuture, and CatchingFuture accepts only Throwable.class
     * under GWT.
     */
    return true;
  }

  static void restoreInterruptIfIsInterruptedException(Throwable t) {}

  static void interruptCurrentThread() {}

   * Class<Throwable>. To handle only certain kinds of exceptions under GWT, you'll need to write
   * your own instanceof tests.
   */

  public static <V extends @Nullable Object> ListenableFuture<V> catching(
      ListenableFuture<? extends V> input,
      Class<Throwable> exceptionType,
      Function<? super Throwable, ? extends V> fallback,
      Executor executor) {

  /**
   * Fails this future with the given Throwable if {@link #allMustSucceed} is true. Also, logs the
   * throwable if it is an {@link Error} or if {@link #allMustSucceed} is {@code true}, the
   * throwable did not cause this future to fail, and it is the first time we've seen that
   * particular Throwable.
   */
  private void handleException(Throwable throwable) {
    checkNotNull(throwable);

    if (allMustSucceed) {

    @Nullable private String value = null;
    @Nullable private Throwable failure = null;
    private boolean wasCalled = false;
    private final Object monitor = new Object();

    MockCallback(String expectedValue) {
      this.value = expectedValue;
    }

    MockCallback(Throwable expectedFailure) {
      this.failure = expectedFailure;
    }

    @Override

      for (int i = 0; i < reps; i++) {
        int f = 0;
        Throwable t = new Throwable();
        for (StackTraceElement ste : getStackTrace(t)) {
          dummy |= ste == duh;
          if (f++ == breakAt) {
            break;
          }
        }
      }
      return dummy;
    }

    abstract List<StackTraceElement> getStackTrace(Throwable t);
  }

  @BeforeExperiment
  public void doBefore() {

      for (int i = 0; i < reps; i++) {
        int f = 0;
        Throwable t = new Throwable();
        for (StackTraceElement ste : getStackTrace(t)) {
          dummy |= ste == duh;
          if (f++ == breakAt) {
            break;
          }
        }
      }
      return dummy;
    }

    abstract List<StackTraceElement> getStackTrace(Throwable t);
  }

  @BeforeExperiment
  public void doBefore() {