//                                                                      ==============
    /**
     * Serves a thumbnail image for the specified document.
     *
     * @param form the thumbnail request form containing document ID and query parameters
     * @return ActionResponse containing the thumbnail image or 404 if not found
     */
    @Execute

        .newClientBuilder()
        .sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager)
        .build()

    val call = client.newCall(Request(server.url("/")))
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.handshake!!.cipherSuite).isNotNull()
    assertThat(response.handshake!!.tlsVersion).isNotNull()

**FastAPI** créera l'objet de type `BackgroundTasks` pour vous et le passera comme paramètre.

## Créer une fonction de tâche { #create-a-task-function }

Créez une fonction à exécuter comme tâche d'arrière-plan.

Une fonction à exécuter comme tâche d'arrière-plan est juste une fonction standard qui peut recevoir des paramètres.

   * Callable}.
   *
   * @param callable the callable task
   * @since 10.0
   */
  public static <V extends @Nullable Object> ListenableFutureTask<V> create(Callable<V> callable) {
    return new ListenableFutureTask<>(callable);
  }

  /**
   * Creates a {@code ListenableFutureTask} that will upon running, execute the given {@code

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

    /**
     * Downloads a log file by its encoded ID.
     *
     * @param id the Base64 encoded filename of the log file to download
     * @return ActionResponse containing the log file stream
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })

    //                                                                      Search Execute
    //                                                                      ==============
    /**
     * Show the index page.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {

        restTests = new XpackRestResourcesSpec(objects);
    }

    void restApi(Action<? super RestResourcesSpec> spec) {
        spec.execute(restApi);
    }

    void restTests(Action<? super XpackRestResourcesSpec> spec) {
        spec.execute(restTests);
    }

    public RestResourcesSpec getRestApi() {
        return restApi;
    }

    public XpackRestResourcesSpec getRestTests() {

      assertThat(task).isInstanceOf(WrappedRunnable.class);
      return inline.submit(task, result);
    }

    @Override
    public void execute(Runnable command) {
      lastMethodCalled = "execute";
      assertThat(command).isInstanceOf(WrappedRunnable.class);
      inline.execute(command);
    }

    private static <T> void assertTaskWrapped(Collection<? extends Callable<T>> tasks) {

        SMBUtil.writeInt2(testSecurityMode, buffer, bufferIndex + 20);

        // Set dialect (2 bytes)
        int testDialect = 0x0311;
        SMBUtil.writeInt2(testDialect, buffer, bufferIndex + 22);

        // Execute decode
        int bytesDecoded = response.decode(buffer, bufferIndex, 24);

        // Verify results
        assertEquals(24, bytesDecoded, "Should decode exactly 24 bytes");

        when(session.getTopLevelProject()).thenReturn(rootProject);
        when(session.getTopDirectory()).thenReturn(basedir.toPath());
        when(event.getSession()).thenReturn(session);

        // execute
        executionEventLogger.projectStarted(event);

        // verify
        InOrder inOrder = inOrder(logger);
        inOrder.verify(logger).info("");