}

  @Override
  public void invalidate(Object key) {
    throw new UnsupportedOperationException();
  }

  /**
   * @since 11.0
   */
  @Override
  // For discussion of <? extends Object>, see getAllPresent.
  public void invalidateAll(Iterable<? extends Object> keys) {
    for (Object key : keys) {
      invalidate(key);
    }
  }

  @Override

      if (delegate != null) {
        return uncheckedCastNullableTToT(delegate.put(key, value)); // See discussion in getValue().
      }
      updateLastKnownIndex();
      if (lastKnownIndex == -1) {
        put(key, value);
        return unsafeNull(); // See discussion in getValue().
      } else {
        V old = value(lastKnownIndex);
        CompactHashMap.this.setValue(lastKnownIndex, value);

* the encoder
* the decoder
* to encode
* to decode

* the exception
* to raise

* the expression
* the statement

* the frontend
* the backend

* the GitHub discussion
* the GitHub issue

* the performance
* the performance optimization

* the return type
* the return value

* the security
* the security scheme

* the task
* the background task

   *
   * <p>Cancelling the pipeline will not cancel {@code future}, so that the pipeline can access its
   * value in order to close it.
   *
   * @param future the future to create the {@code ClosingFuture} from. For discussion of the
   *     future's result type {@code C}, see {@link DeferredCloser#eventuallyClose(Object,
   *     Executor)}.
   * @param closingExecutor the future's result will be closed on this executor

  void invalidate(@CompatibleWith("K") Object key);

  /**
   * Discards any cached values for keys {@code keys}.
   *
   * @since 11.0
   */
  // For discussion of <? extends Object>, see getAllPresent.
  void invalidateAll(Iterable<? extends Object> keys);

  /** Discards all entries in the cache. */
  void invalidateAll();

  }

  private static final class AboveAll extends Cut<Comparable<?>> {
    private static final AboveAll INSTANCE = new AboveAll();

    private AboveAll() {
      // For discussion of "", see BelowAll.
      super("");
    }

    @Override
    Comparable<?> endpoint() {
      throw new IllegalStateException("range unbounded on this side");
    }

    @Override

 * <p>No cascading checks are performed against the return values of methods unless the method is a
 * static factory method. Neither are semantics of mutation methods such as {@code
 * someList.add(obj)} checked. For more detailed discussion of supported and unsupported cases, see
 * {@link #testEquals}, {@link #testNulls} and {@link #testSerializable}.
 *
 * <p>For testing against the returned instances from a static factory class, such as
 *
 * <pre>

      if (delegate != null) {
        return uncheckedCastNullableTToT(delegate.put(key, value)); // See discussion in getValue().
      }
      updateLastKnownIndex();
      if (lastKnownIndex == -1) {
        put(key, value);
        return unsafeNull(); // See discussion in getValue().
      } else {
        V old = value(lastKnownIndex);
        CompactHashMap.this.setValue(lastKnownIndex, value);

    }
    init(elementCount);
    for (int i = 0; i < elementCount; i++) {
      E element = (E) stream.readObject();
      add(element);
    }
  }

  /*
   * For discussion of the safety of the following methods, see the comments near the end of
   * CompactHashMap.
   */

  private Object requireTable() {
    return requireNonNull(table);
  }

* the encoder
* the decoder
* to encode
* to decode

* the exception
* to raise

* the expression
* the statement

* the frontend
* the backend

* the GitHub discussion
* the GitHub issue

* the performance
* the performance optimization

* the return type
* the return value

* the security
* the security scheme

* the task
* the background task