```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial009b.py!}
```

////

#### Using `Union` or `Optional`

If you are using a Python version below 3.10, here's a tip from my very **subjective** point of view:

* 🚨 Avoid using `Optional[SomeType]`
* Instead ✨ **use `Union[SomeType, None]`** ✨.

   * the returned list is unspecified.
   *
   * <p>The returned list is serializable.
   *
   * @param backingArray the array to back the list
   * @return a list view of the array
   */
  public static List<Byte> asList(byte... backingArray) {
    if (backingArray.length == 0) {
      return Collections.emptyList();
    }
    return new ByteArrayAsList(backingArray);
  }

		}
	}

	replicationStats = append(replicationStats, bucketStatsMap)
	return replicationStats
}

// GetClusterBucketStats - calls GetClusterBucketStats call on all peers for a cluster statistics view.
func (sys *NotificationSys) GetClusterBucketStats(ctx context.Context, bucketName string) []BucketStats {
	ng := WithNPeers(len(sys.peerClients)).WithRetries(1)
	bucketStats := make([]BucketStats, len(sys.peerClients))

  /**
   * Returns an immutable multimap containing the same mappings as {@code multimap}. The generated
   * multimap's key and value orderings correspond to the iteration ordering of the {@code
   * multimap.asMap()} view.
   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are

   * the returned list is unspecified.
   *
   * <p>The returned list is serializable.
   *
   * @param backingArray the array to back the list
   * @return a list view of the array
   */
  public static List<Character> asList(char... backingArray) {
    if (backingArray.length == 0) {
      return Collections.emptyList();
    }
    return new CharArrayAsList(backingArray);
  }

   * the returned list is unspecified.
   *
   * <p>The returned list is serializable.
   *
   * @param backingArray the array to back the list
   * @return a list view of the array
   */
  public static List<Short> asList(short... backingArray) {
    if (backingArray.length == 0) {
      return Collections.emptyList();
    }
    return new ShortArrayAsList(backingArray);
  }

   * the returned list is unspecified.
   *
   * <p>The returned list is serializable.
   *
   * @param backingArray the array to back the list
   * @return a list view of the array
   */
  public static List<Short> asList(short... backingArray) {
    if (backingArray.length == 0) {
      return Collections.emptyList();
    }
    return new ShortArrayAsList(backingArray);
  }

    return None

  print('You have Clang %s installed.\n' % curr_version)
  return curr_version


# Disable clang extension that rejects type definitions within offsetof.
# This was added in clang-16 by https://reviews.llvm.org/D133574.
# Still required for clang-17.
# Can be removed once upb is updated, since a type definition is used within
# offset of in the current version of ubp. See

```


Note that the commands above attempt to validate if the given entity (user or group) exist in the LDAP directory and return an error if they are not found.

<details><summary> View **DEPRECATED** older policy association commands</summary>

Please **do not use** these as they may be removed or their behavior may change.

```sh

    //                                                                      Search Execute
    //                                                                      ==============

    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {
        saveToken();
        return asIndexHtml();
    }

    private HtmlResponse asIndexHtml() {