* it is invoked using this executor once the future's computation is {@linkplain Future#isDone()
 * complete}. If the computation has already completed when the listener is added, the listener will
 * execute immediately.
 *
 * <p>See the Guava User Guide article on <a
 * href="https://github.com/google/guava/wiki/ListenableFutureExplained">{@code
 * ListenableFuture}</a>.

  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.Time lastScheduleTime = 4;

  // Information when was the last time the job successfully completed.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.Time lastSuccessfulTime = 5;
}

// JobTemplateSpec describes the data a Job should have when created from a template
message JobTemplateSpec {

// Versions are in descending order of preference, with the first version being the preferred entry.
message APIGroupDiscovery {
  // Standard object's metadata.
  // The only field completed will be name. For instance, resourceVersion will be empty.
  // name is the name of the API group whose discovery information is presented here.
  // name is allowed to be "" to represent the legacy, ungroupified resources.

 * it is invoked using this executor once the future's computation is {@linkplain Future#isDone()
 * complete}. If the computation has already completed when the listener is added, the listener will
 * execute immediately.
 *
 * <p>See the Guava User Guide article on <a
 * href="https://github.com/google/guava/wiki/ListenableFutureExplained">{@code
 * ListenableFuture}</a>.

You can add more than one event handler function.

And your application won't start receiving requests until all the `startup` event handlers have completed.

### `shutdown` event

To add a function that should be run when the application is shutting down, declare it with the event `"shutdown"`:

```Python hl_lines="6"
{!../../../docs_src/events/tutorial002.py!}