failure.initCause(e);
    throw failure;
  }

  private ExecutionException getExpectingExecutionException(AbstractFuture<String> future)
      throws InterruptedException {
    try {
      String got = future.get();
      throw new AssertionError("Expected exception but got " + got);
    } catch (ExecutionException e) {
      return e;

   * {@code ClassCastException} for any elements {@code e1} and {@code e2} in the multiset. If the
   * user attempts to add an element to the multiset that violates this constraint (for example, the
   * user attempts to add a string element to a set whose elements are integers), the {@code
   * add(Object)} call will throw a {@code ClassCastException}.
   *

  public Entry<E> lastEntry() {
    return delegate().lastEntry();
  }

  @Override
  @CheckForNull
  public Entry<E> pollFirstEntry() {
    throw new UnsupportedOperationException();
  }

  @Override
  @CheckForNull
  public Entry<E> pollLastEntry() {
    throw new UnsupportedOperationException();
  }

  @Override
  public SortedMultiset<E> headMultiset(E upperBound, BoundType boundType) {

  }

  public void testCatchingAsync_fallbackGeneratesError() throws Exception {
    final Error error = new Error("deliberate");
    AsyncFunction<Throwable, Integer> fallback =
        new AsyncFunction<Throwable, Integer>() {
          @Override
          public ListenableFuture<Integer> apply(Throwable t) throws Exception {
            throw error;
          }
        };

   *
   * @throws IllegalArgumentException if {@code x <= 0}
   * @throws ArithmeticException of the next-higher power of two is not representable as a {@code
   *     long}, i.e. when {@code x > 2^62}
   * @since 20.0
   */
  public static long ceilingPowerOfTwo(long x) {
    checkPositive("x", x);
    if (x > MAX_SIGNED_POWER_OF_TWO) {

   *
   * <p>The default implementation throws {@code NoSuchElementException}.
   *
   * @return the minimum value of type {@code C}; never null
   * @throws NoSuchElementException if the type has no (practical) minimum value; for example,
   *     {@link java.math.BigInteger}
   */
  @CanIgnoreReturnValue
  public C minValue() {
    throw new NoSuchElementException();
  }

  /**

      @Override
      public void write(int c) throws IOException {
        separatingAppendable.append((char) c);
      }

      @Override
      public void write(char[] chars, int off, int len) throws IOException {
        throw new UnsupportedOperationException();
      }

      @Override
      public void flush() throws IOException {
        delegate.flush();
      }

    resetMap(createArrayWithNullValue());
  }

  /**
   * Equivalent to {@link #expectMissingKeys(Object[]) expectMissingKeys} {@code (null)} except that
   * the call to {@code contains(null)} is permitted to throw a {@code NullPointerException}.
   *
   * @param message message to use upon assertion failure
   */
  protected void expectNullKeyMissingWhenNullKeysUnsupported(String message) {
    try {

    } catch (Exception e) {
      if (!(e instanceof SomeCheckedException)) {
        throw e;
      }
    }

    // But the second time, AbstractIterator itself throws an ISE
    try {
      iter.hasNext();
      fail("No exception thrown");
    } catch (IllegalStateException expected) {
    }
  }

  public void testException() {

  public final @Nullable V put(K k, V v) {
    throw new UnsupportedOperationException();
  }

  public final @Nullable V remove(Object o) {
    throw new UnsupportedOperationException();
  }

  public final void putAll(Map<? extends K, ? extends V> map) {
    throw new UnsupportedOperationException();
  }

  public final void clear() {
    throw new UnsupportedOperationException();
  }

  @Override