Volume cloning enables users to specify another PVC as a "DataSource" when provisioning a new volume. If the underlying storage system supports this functionality and implements the "CLONE_VOLUME" capability in its CSI driver, then the new volume becomes a clone of the source volume.

These changes are reflected in the following Kubernetes enhancements:
([#625](https://github.com/kubernetes/enhancements/issues/625))

   * @return an array containing the same values as {@code collection}, in the same order, converted
   *     to primitives
   * @throws NullPointerException if {@code collection} or any of its elements is null
   * @since 1.0 (parameter was {@code Collection<Integer>} before 12.0)
   */
  public static int[] toArray(Collection<? extends Number> collection) {
    if (collection instanceof IntArrayAsList) {

          return false
        }

        if (!dispatcher.peek().inTunnel) return true // No more tunnel requests.
      }
    }

    /**
     * Reads a request and writes its response. Returns true if further calls should be attempted
     * on the socket.
     */
    @Throws(IOException::class, InterruptedException::class)
    private fun processOneRequest(socket: MockWebServerSocket): Boolean {

## Urgent Upgrade Notes
### (No, really, you MUST read this before you upgrade)
#### Cluster Lifecycle

	c.Assert(err, nil)
	// execute the HTTP request for object upload.
	response, err = s.client.Do(request)
	c.Assert(err, nil)
	c.Assert(response.StatusCode, http.StatusOK)

	// fetch the object back and verify its contents.
	request, err = newTestSignedRequest(http.MethodGet, getGetObjectURL(s.endPoint, bucketName, objectName),
		0, nil, s.accessKey, s.secretKey, s.signer)
	c.Assert(err, nil)

        // those, this method can cause issues even if the user is dealing with a (finite) slice()
        // of this source, since the slice's sizeIfKnown() method needs to know the size of the
        // underlying source to know what its size actually is.
        return Optional.absent();
      }
      long result = 0L;
      for (ByteSource source : sources) {
        Optional<Long> sizeIfKnown = source.sizeIfKnown();

    public static final String FESS_LOG_LEVEL = "fess.log.level";

    /** Fess LLM log level configuration key. */
    public static final String FESS_LLM_LOG_LEVEL = "fess.llm.log.level";

    /** Track total hits configuration key. */
    public static final String TRACK_TOTAL_HITS = "track_total_hits";

    /** System property prefix for Fess configuration. */
    public static final String SYSTEM_PROP_PREFIX = "fess.system.";

    directedGraph.putEdge(N1, N2);
    directedGraph.putEdge(N1, N3);
    directedGraph.putEdge(N2, N3);
    directedGraph.addNode(N4);

    // the above graph is its own transitive closure
    MutableGraph<Integer> expectedClosure = GraphBuilder.directed().allowsSelfLoops(true).build();
    expectedClosure.putEdge(N1, N2);
    expectedClosure.putEdge(N1, N3);

   * as implementation details.
   *
   * <p>Since the bimap is immutable, ImmutableBiMap doesn't require special logic for keeping the
   * bimap and its inverse in sync during serialization, the way AbstractBiMap does.
   */
  @J2ktIncompatible // serialization
  private static final class SerializedForm<K, V> extends ImmutableMap.SerializedForm<K, V> {

	if err := tw.writeRawHeader(&tw.blk, int64(len(data)), flag); err != nil {
		return err
	}
	_, err := io.WriteString(tw, data)
	return err
}

// writeRawHeader writes the value of blk, regardless of its value.
// It sets up the Writer such that it can accept a file of the given size.
// If the flag is a special header-only flag, then the size is treated as zero.