before.assertRun();
    inBetween.assertRun();
    after.assertRun();
  }

  public void testListenLaterSetAsynchronouslyLaterDelegateFailed() {
    CountingRunnable before = new CountingRunnable();
    CountingRunnable inBetween = new CountingRunnable();
    CountingRunnable after = new CountingRunnable();

    future.addListener(before, directExecutor());

**FastAPI** provides it as a convenience for you, the developer. But it comes directly from Starlette.

///

### Before and after the `response`

You can add code to be run with the `request`,  before any *path operation* receives it.

And also after the `response` is generated, before returning it.

        Metadata source = createMetadataFromArtifact(artifact);
        Date before = new Date(System.currentTimeMillis() - 5000);
        Date after = new Date(System.currentTimeMillis());
        addSnapshotVersion(target.getVersioning(), "jar", before, "1", 1);
        SnapshotVersion sv2 =

color:#28a745}.custom-control-input.is-valid~.custom-control-label::before,.was-validated .custom-control-input:valid~.custom-control-label::before{border-color:#28a745}.custom-control-input.is-valid:checked~.custom-control-label::before,.was-validated .custom-control-input:valid:checked~.custom-control-label::before{border-color:#34ce57;background-color:#34ce57}.custom-control-input.is-valid:focus~.custom-control-label::before,.was-validated .custom-control-input:valid:focus~.custom-control-lab...

    before.assertRun();
    inBetween.assertRun();
    after.assertRun();
  }

  public void testListenLaterSetAsynchronouslyLaterDelegateFailed() {
    CountingRunnable before = new CountingRunnable();
    CountingRunnable inBetween = new CountingRunnable();
    CountingRunnable after = new CountingRunnable();

    future.addListener(before, directExecutor());

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**.

  // Why 1000?  WHY NOT!
  private static final int MAX_BUSY_WAIT_SPINS = 1000;

  @Override
  public final void run() {
    /*
     * Set runner thread before checking isDone(). If we were to check isDone() first, the task
     * might be cancelled before we set the runner thread. That would make it impossible to
     * interrupt, yet it will still run, since interruptTask will leave the runner value null,

    String CLEAN = "clean";
    String DEFAULT = "default";
    String SITE = "site";

    // ======================
    // Phase qualifiers
    // ======================
    String BEFORE = "before:";
    String AFTER = "after:";
    String AT = "at:";

    /**
     * Name or identifier of this lifecycle.
     *
     * @return the unique identifier for this lifecycle
     */
    @Override

@Consumer
@Named
public interface ModelTransformer extends SpiService {

    /**
     * Apply a transformation on the file model.
     *
     * This method will be called on each file model being loaded,
     * just before validation.
     *
     * @param model the input model
     * @return the transformed model, or the input model if no transformation is needed
     * @throws ModelTransformerException
     */
    @Nonnull

 ~ .custom-control-label {\n  color: #28a745;\n}\n\n.was-validated .custom-control-input:valid ~ .custom-control-label::before, .custom-control-input.is-valid ~ .custom-control-label::before {\n  border-color: #28a745;\n}\n\n.was-validated .custom-control-input:valid:checked ~ .custom-control-label::before, .custom-control-input.is-valid:checked ~ .custom-control-label::before {\n  border-color: #34ce57;\n  background-color: #34ce57;\n}\n\n.was-validated .custom-control-input:valid:focus ~ .cust...