*/
  private static final SuccessorsFunction<Character> TWO_CYCLES_GRAPH =
      createDirectedGraph("ab", "ac", "bc", "cd", "da");

  /**
   * A tree-shaped graph that looks as follows (all edges are directed facing downwards):
   *
   * <pre>{@code
   *        h
   *       /|\
   *      / | \
   *     /  |  \
   *    d   e   g
   *   /|\      |
   *  / | \     |
   * a  b  c    f
   * }</pre>

            startAnotherThread()
          }

          return readyTask
        }

        // Notify the coordinator of a task that's coming up soon.
        coordinatorWaiting -> {
          if (minDelayNanos < coordinatorWakeUpAt - now) {
            backend.coordinatorNotify(this@TaskRunner)
          }
          return null
        }

**FastAPI** provides several tools to help you deal with **Security** easily, rapidly, in a standard way, without having to study and learn all the security specifications.

But first, let's check some small concepts.

## In a hurry?

// otherwise fallback to 'PodIP'.
//
// Note that very early in the pod's lifecycle (before all the node CNI plugin invocations finish)
// K8S may not have received the pod IPs yet, and may not report the pod as having any.
func GetPodIPsIfPresent(pod *corev1.Pod) []netip.Addr {
	var podIPs []netip.Addr
	if len(pod.Status.PodIPs) != 0 {
		for _, pip := range pod.Status.PodIPs {
			ip := netip.MustParseAddr(pip.IP)

room at all for any lesson-books!'

  And so she went on, taking first one side and then the other,
and making quite a conversation of it altogether; but after a few
minutes she heard a voice outside, and stopped to listen.

  `Mary Ann!  Mary Ann!' said the voice.  `Fetch me my gloves
this moment!'  Then came a little pattering of feet on the
stairs.  Alice knew it was the Rabbit coming to look for her, and

  optional ContainerResourceMetricSource containerResource = 7;

  // external refers to a global metric that is not associated
  // with any Kubernetes object. It allows autoscaling based on information
  // coming from components running outside of cluster
  // (for example length of queue in cloud messaging service, or
  // QPS from loadbalancer running outside of cluster).
  // +optional
  optional ExternalMetricSource external = 5;

  private static final ImmutableSet<String> NO_PS =
      ImmutableSet.of("www", "foo.ihopethiswillneverbeapublicsuffix", "x.y.z");

  /**
   * Having a public suffix is equivalent to having a registry suffix, because all registry suffixes
   * are public suffixes, and all public suffixes have registry suffixes.
   */
  private static final ImmutableSet<String> NO_RS = NO_PS;

These functions are there (instead of just using the classes directly) so that your editor doesn't mark errors about their types.

That way you can use your normal editor and coding tools without having to add custom configurations to disregard those errors.

The same way, you can define logic (code) that should be executed when the application is **shutting down**. In this case, this code will be executed **once**, **after** having handled possibly **many requests**.

Because this code is executed before the application **starts** taking requests, and right after it **finishes** handling requests, it covers the whole application **lifespan** (the word "lifespan" will be important in a second 😉).

### Breaking Changes


`tf.keras`: