_, zoneOffset := t.Zone()
		return FromInt(int64(zoneOffset / 3600)), nil
	case timePartTimezoneMinute:
		_, zoneOffset := t.Zone()
		return FromInt(int64((zoneOffset % 3600) / 60)), nil
	default:
		// This does not happen
		return nil, errNotImplemented
	}
}

func dateAdd(timePart string, qty float64, t time.Time) (*Value, error) {
	var duration time.Duration
	switch timePart {
	case timePartYear:

 * the proxy. This proxy connection is called a "TLS Tunnel" and is specified by
 * [RFC 2817][1]. The HTTP CONNECT request that creates this tunnel connection is special: it
 * does not participate in any [interceptors][Interceptor] or [event listeners][EventListener]. It
 * doesn't include the motivating request's HTTP headers or even its full URL; only the target
 * server's hostname is sent to the proxy.
 *

 *       fulfills the {@link java.util.List} contract.
 *   <dt>{@link SetMultimap}
 *   <dd>An extension of {@link Multimap} which has order-independent equality and does not allow
 *       duplicate entries; that is, while a key may appear twice in a {@code SetMultimap}, each
 *       must map to a different value. {@code SetMultimap} takes its name from the fact that the

            StackOverflowError.class,
            e -> e instanceof StackOverflowError);
      }
    };

    // used under GWT, etc., since the override of this method does not exist there
    ImmutableMap<Class<? extends Throwable>, Predicate<Throwable>> exceptions() {
      return ImmutableMap.of();
    }
  }

    this.wordSeparator = wordSeparator;
  }

  /**
   * Converts the specified {@code String str} from this format to the specified {@code format}. A
   * "best effort" approach is taken; if {@code str} does not conform to the assumed format, then
   * the behavior of this method is undefined but we make a reasonable effort at converting anyway.
   */
  public final String to(CaseFormat format, String str) {

    protected Collection<ArtifactMetadata> dependencies;

    /** metadata URI */
    protected String uri;

    /** is metadata found anywhere */
    protected boolean resolved = false;

    /** does the actual artifact for this metadata exists */
    protected boolean artifactExists = false;
    /** artifact URI */
    protected String artifactUri;

    /** error message  */
    private String error;

}

func (t *Cache[T]) update(ctx context.Context) error {
	val, err := t.updateFn(ctx)
	if err != nil {
		if t.opts.ReturnLastGood && t.val.Load() != nil {
			// Keep last good value, so update
			// does not return an error.
			return nil
		}
		return err
	}

	t.val.Store(&val)
	t.lastUpdateMs.Store(time.Now().UnixMilli())
	return nil

        removeFrom.remove();
        modified = true;
      }
    }
    return modified;
  }

  /**
   * Traverses an iterator and removes every element that does not belong to the provided
   * collection. The iterator will be left exhausted: its {@code hasNext()} method will return
   * {@code false}.
   *
   * @param removeFrom the iterator to (potentially) remove elements from

  private transient Map<K, KeyList<K, V>> keyToKeyList;
  private transient int size;

  /*
   * Tracks modifications to keyToKeyList so that addition or removal of keys invalidates
   * preexisting iterators. This does *not* track simple additions and removals of values
   * that are not the first to be added or last to be removed for their key.
   */
  private transient int modCount;

		return
	}

	// filter object lock metadata if permission does not permit
	getRetPerms := checkRequestAuthType(ctx, r, policy.GetObjectRetentionAction, bucket, object)
	legalHoldPerms := checkRequestAuthType(ctx, r, policy.GetObjectLegalHoldAction, bucket, object)

	// filter object lock metadata if permission does not permit