fail("calling setCount() with a negative count should throw IllegalArgumentException");
    } catch (IllegalArgumentException expected) {
    }
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  public void testSetCount_negative_removeUnsupported() {
    try {
      setCountNoCheckReturnValue(e3(), -1);
      fail(
          "calling setCount() with a negative count should throw "

      fail("calling setCount() with a negative count should throw IllegalArgumentException");
    } catch (IllegalArgumentException expected) {
    }
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  public void testSetCount_negative_removeUnsupported() {
    try {
      setCountNoCheckReturnValue(e3(), -1);
      fail(
          "calling setCount() with a negative count should throw "

    assertFalse(service.isRunning());
    assertFalse(service.doStopCalled);
  }

  /**
   * The user of this service should call {@link #notifyStarted} and {@link #notifyStopped} after
   * calling {@link #startAsync} and {@link #stopAsync}.
   */
  private static class ManualSwitchedService extends AbstractService {
    boolean doStartCalled = false;
    boolean doStopCalled = false;

    @Override

     *
     * (In addition to useForNull, we also offer skipNulls. It, too, tolerates null inputs, but its
     * tolerance is implemented differently: Its implementation avoids calling this toString(Object)
     * method in the first place.)
     */
    requireNonNull(part);
    return (part instanceof CharSequence) ? (CharSequence) part : part.toString();
  }

    @Override
    @CheckForNull
    public E floor(@ParametricNullness E e) {
      return delegate.floor(e);
    }

    @Override
    @CheckForNull
    public E ceiling(@ParametricNullness E e) {
      return delegate.ceiling(e);
    }

    @Override
    @CheckForNull
    public E higher(@ParametricNullness E e) {
      return delegate.higher(e);
    }

    @Override

  private DiscreteDomain(boolean supportsFastOffset) {
    this.supportsFastOffset = supportsFastOffset;
  }

  /**
   * Returns, conceptually, "origin + distance", or equivalently, the result of calling {@link
   * #next} on {@code origin} {@code distance} times.
   */
  C offset(C origin, long distance) {
    C current = origin;
    checkNonnegative(distance, "distance");
    for (long i = 0; i < distance; i++) {

    List<Object> result = doConcurrentGet(cache, "bar", count, startSignal);

    assertEquals(1, callCount.get());
    for (int i = 0; i < count; i++) {
      // doConcurrentGet alternates between calling getUnchecked and calling get, but an unchecked
      // exception thrown by the loader is always wrapped as an UncheckedExecutionException.
      assertThat(result.get(i)).isInstanceOf(UncheckedExecutionException.class);

          //
          // If an exception is thrown by the subclass then we need to make sure that the service
          // notices and transitions to the FAILED state. We do it by calling notifyFailed directly
          // because the service does not monitor the state of the future so if the exception is not
          // caught and forwarded to the service the task would stop executing but the service would

      }
      awaitUnchecked(barrier);
      assertThat(future.isDone()).isTrue();
      // inspect state and ensure it is correct!
      // asserts that all get calling threads received the same value
      Object result = Iterables.getOnlyElement(finalResults);
      if (result == CancellationException.class) {
        assertTrue(future.isCancelled());
        if (future.wasInterrupted()) {

      this.className = checkNotNull(className);
    }

    /**
     * Configures the {@link ToStringHelper} so {@link #toString()} will ignore properties with null
     * value. The order of calling this method, relative to the {@code add()}/{@code addValue()}
     * methods, is not significant.
     *
     * @since 18.0 (since 12.0 as {@code Objects.ToStringHelper.omitNullValues()}).
     */