new ListenableFuture<String>() {
          @Override
          public boolean cancel(boolean interrupt) {
            return false;
          }

          @Override
          public boolean isDone() {
            return true;
          }

          @Override
          public boolean isCancelled() {
            return true; // BAD!!
          }

          @Override

  public @Nullable E pollLast() {
    return delegate.pollLast();
  }

  @Override
  public boolean remove(Object object) {
    return delegate.remove(checkValid(object));
  }

  @Override
  public boolean removeAll(Collection<?> c) {
    return delegate.removeAll(c);
  }

  @Override
  public boolean retainAll(Collection<?> c) {
    return delegate.retainAll(c);
  }

  @Override

    JdkMatcher(Matcher matcher) {
      this.matcher = Preconditions.checkNotNull(matcher);
    }

    @Override
    public boolean matches() {
      return matcher.matches();
    }

    @Override
    public boolean find() {
      return matcher.find();
    }

    @Override
    public boolean find(int index) {
      return matcher.find(index);
    }

    @Override
    public String replaceAll(String replacement) {

  ContiguousSet<C> headSetImpl(C toElement, boolean inclusive) {
    return this;
  }

  @Override
  ContiguousSet<C> subSetImpl(
      C fromElement, boolean fromInclusive, C toElement, boolean toInclusive) {
    return this;
  }

  @Override
  ContiguousSet<C> tailSetImpl(C fromElement, boolean fromInclusive) {
    return this;
  }

  @Override
  public boolean contains(@CheckForNull Object object) {

     */
    assertEquals(RESULT, getUninterruptibly(future, -1, SECONDS));
  }

  private static FutureTask<Boolean> untimedInterruptReporter(
      final Future<?> future, final boolean allowInterruption) {
    return new FutureTask<>(
        new Callable<Boolean>() {
          @Override
          public Boolean call() throws Exception {
            Object actual;
            if (allowInterruption) {

  public boolean add(@ParametricNullness E element) {
    return delegate().add(element);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean remove(@CheckForNull Object object) {
    return delegate().remove(object);
  }

  @Override
  public boolean containsAll(Collection<?> collection) {
    return delegate().containsAll(collection);
  }

  @CanIgnoreReturnValue
  @Override

  public boolean add(@ParametricNullness E element) {
    return delegate().add(element);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean remove(@CheckForNull Object object) {
    return delegate().remove(object);
  }

  @Override
  public boolean containsAll(Collection<?> collection) {
    return delegate().containsAll(collection);
  }

  @CanIgnoreReturnValue
  @Override

   * false} for {@code boolean} and {@code '\0'} for {@code char}. For non-primitive types and
   * {@code void}, {@code null} is returned.
   */
  @SuppressWarnings("unchecked")
  @CheckForNull
  public static <T> T defaultValue(Class<T> type) {
    checkNotNull(type);
    if (type.isPrimitive()) {
      if (type == boolean.class) {
        return (T) Boolean.FALSE;
      } else if (type == char.class) {

  }

  @CanIgnoreReturnValue
  @Override
  public boolean set(@ParametricNullness V value) {
    return super.set(value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean setException(Throwable throwable) {
    return super.setException(throwable);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean setFuture(ListenableFuture<? extends V> future) {
    return super.setFuture(future);

    }
  }

  private static final class RuntimeExceptionThrowingFuture<V> implements Future<V> {
    final CountDownLatch allowGetToComplete = new CountDownLatch(1);

    @Override
    public boolean cancel(boolean mayInterruptIfRunning) {
      throw new AssertionFailedError();
    }

    @Override
    public V get() throws InterruptedException {
      /*