ImmutableCollection<E> delegateCollection() {
    return delegate;
  }

  ImmutableList<? extends E> delegateList() {
    return delegateList;
  }

  @SuppressWarnings("unchecked") // safe covariant cast!
  @Override
  public UnmodifiableListIterator<E> listIterator(int index) {
    return (UnmodifiableListIterator<E>) delegateList.listIterator(index);
  }

  @GwtIncompatible // not present in emulated superclass

    @Override
    public <T> T lookup(Class<T> type, String name) {
        return lookup(type);
    }

    @Override
    public <T> Optional<T> lookupOptional(Class<T> type) {
        return Optional.ofNullable(type.cast(components.get(type)));
    }

    @Override
    public <T> Optional<T> lookupOptional(Class<T> type, String name) {
        return lookupOptional(type);
    }

    @Override

  }

  final class KeySet extends View<K, V, K> {
    KeySet() {
      super(HashBiMap.this);
    }

    @Override
    @ParametricNullness
    K forEntry(int entry) {
      // The cast is safe because we call forEntry only for indexes that contain entries.
      return uncheckedCastNullableTToT(keys[entry]);
    }

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

      return false;
    }
    // The cast is safe because of the hasLowerBound() check.
    T lbound = uncheckedCastNullableTToT(getLowerEndpoint());
    int cmp = comparator.compare(t, lbound);
    return cmp < 0 | (cmp == 0 & getLowerBoundType() == OPEN);
  }

  boolean tooHigh(@ParametricNullness T t) {
    if (!hasUpperBound()) {
      return false;
    }
    // The cast is safe because of the hasUpperBound() check.

  @CheckForNull private transient volatile CacheEntry<K, V> cacheEntry2;

  MapRetrievalCache(Map<K, V> backingMap) {
    super(backingMap);
  }

  @SuppressWarnings("unchecked") // Safe because we only cast if key is found in map.
  @Override
  @CheckForNull
  V get(Object key) {
    checkNotNull(key);
    V value = getIfCached(key);
    if (value != null) {
      return value;
    }

    }
    return total;
  }

  private long aggregateBelowRange(Aggregate aggr, @CheckForNull AvlNode<E> node) {
    if (node == null) {
      return 0;
    }
    // The cast is safe because we call this method only if hasLowerBound().
    int cmp =
        comparator()
            .compare(uncheckedCastNullableTToT(range.getLowerEndpoint()), node.getElement());
    if (cmp < 0) {

 * the symmetry of {@code equals}. Custom definitions of equality are usually based on an interface,
 * such as {@code Set} or {@code List}, so that the implementation of {@code equals} can cast the
 * object being tested for equality to the custom interface. {@code ForwardingObject} implements no
 * such custom interfaces directly; they are implemented only in subclasses. Therefore, forwarding

  @CheckForNull private transient volatile CacheEntry<K, V> cacheEntry2;

  MapRetrievalCache(Map<K, V> backingMap) {
    super(backingMap);
  }

  @SuppressWarnings("unchecked") // Safe because we only cast if key is found in map.
  @Override
  @CheckForNull
  V get(Object key) {
    checkNotNull(key);
    V value = getIfCached(key);
    if (value != null) {
      return value;
    }

    dependency_cache = dependency_cache or {}
    sub_dependant: Dependant
    for sub_dependant in dependant.dependencies:
        sub_dependant.call = cast(Callable[..., Any], sub_dependant.call)
        sub_dependant.cache_key = cast(
            Tuple[Callable[..., Any], Tuple[str]], sub_dependant.cache_key
        )
        call = sub_dependant.call
        use_sub_dependant = sub_dependant
        if (

 * https://lauri.võsandi.com/2017/03/yubikey-for-ssh-auth.html
 *
 * Using PKCS11 support in the JDK.
 * https://tersesystems.com/blog/2018/09/08/keymanagers-and-keystores/
 *
 * Install OpenSC separately. On a mac `brew cast install opensc`.
 */
@SuppressSignatureCheck
class YubikeyClientAuth {
  fun run() {
    // The typical PKCS11 slot, may vary with different hardware.
    val slot = 0