}
}
```

### 7.2 Hierarchical Cache Management
```java
public class HierarchicalCacheManager {
    private final DirectoryLeaseManager leaseManager;
    private final Map<String, Set<String>> parentChildMap;
    
    public void invalidateHierarchy(String path) {
        // Invalidate all parent directories up to root
        String currentPath = path;

  }

  /**
   * Returns the empty bimap.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */
  // Casting to any type is safe because the set will never hold any elements.
  @SuppressWarnings("unchecked")
  public static <K, V> ImmutableBiMap<K, V> of() {
    return (ImmutableBiMap<K, V>) RegularImmutableBiMap.EMPTY;
  }

      .isTrue()
  }

  @Test fun parseAll() {
    val headers =
      Headers
        .Builder()
        .add("Set-Cookie: a=b")
        .add("Set-Cookie: c=d")
        .build()
    val cookies = parseAll(url, headers)
    assertThat(cookies.size).isEqualTo(2)
    assertThat(cookies[0].toString()).isEqualTo("a=b; path=/")

  }

  @J2ktIncompatible // b/239034072: Kotlin varargs copy parameter arrays.
  public void testAsList_isAView() {
    double[] array = {0.0, 1.0};
    List<Double> list = Doubles.asList(array);
    list.set(0, 2.0);
    assertThat(array).isEqualTo(new double[] {2.0, 1.0});
    array[1] = 3.0;
    assertThat(list).containsExactly(2.0, 3.0).inOrder();
  }

  public void testAsList_toArray_roundTrip() {

     *             if the host cannot be resolved to find out.
     */
    boolean isActive(CIFSContext tc) throws UnknownHostException;

    /**
     * Determines if this address is set to be permanent.
     *
     * @param tc
     *            context to use
     * @return whether this address is permanent
     *
     * @throws UnknownHostException

    /**
     * Get current load balancing strategy
     *
     * @return current strategy
     */
    public LoadBalancingStrategy getStrategy() {
        return strategy;
    }

    /**
     * Set load balancing strategy
     *
     * @param strategy new strategy
     */
    public void setStrategy(LoadBalancingStrategy strategy) {
        this.strategy = strategy;
    }

    /**

import java.util.concurrent.atomic.AtomicLong;

/**
 * One or more variables that together maintain an initially zero {@code long} sum. When updates
 * (method {@link #add}) are contended across threads, the set of variables may grow dynamically to
 * reduce contention. Method {@link #sum} (or, equivalently, {@link #longValue}) returns the current
 * total combined across the variables maintaining the sum.
 *

        .isNotEqualTo(fingerprint(stringB.getBytes(UTF_8)));

    // ISO 8859-1 only has 0-255 (ubyte) representation so throws away UTF-8 characters
    // greater than 127 (ie with their top bit set).
    // Don't attempt to do this in real code.
    assertEquals(
        fingerprint(stringA.getBytes(ISO_8859_1)), fingerprint(stringB.getBytes(ISO_8859_1)));
  }

  public void testPutNonChars() {

    // the resource is visible to the system class loader.
    assertThrows(IllegalArgumentException.class, () -> Resources.getResource(tempFile.getName()));

    // Now set the context loader to one that should find the resource.
    URL baseUrl = tempFile.getParentFile().toURI().toURL();
    URLClassLoader loader = new URLClassLoader(new URL[] {baseUrl});

			}
		}
		return rulesMap.MatchSimple(ev.EventName, ev.S3.Object.Key)
	})
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}
	if bucketName != "" {
		values.Set(peerRESTListenBucket, bucketName)
	}
	for _, peer := range peers {
		if peer == nil {
			continue
		}
		peer.Listen(ctx, mergeCh, values)
	}

	var (
		emptyEventTicker <-chan time.Time