## Ejecuta el código { #run-the-code }

Todos los bloques de código pueden ser copiados y usados directamente (de hecho, son archivos Python probados).

Para ejecutar cualquiera de los ejemplos, copia el código a un archivo `main.py`, y comienza `fastapi dev` con:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:solid">main.py</u>

    public AbstractUpgradeGoal(StrategyOrchestrator orchestrator) {
        this.orchestrator = orchestrator;
    }

    /**
     * Executes the upgrade goal.
     * Template method that calls doUpgrade and optionally saves modifications.
     */
    @Override
    public int execute(UpgradeContext context) throws Exception {
        UpgradeOptions options = context.options();

        // Determine target model version

      Function<? super Throwable, ? extends V> fallback,
      Executor executor) {
    return (FluentFuture<V>) Futures.catching(this, exceptionType, fallback, executor);
  }

  public final FluentFuture<V> catchingAsync(
      Class<Throwable> exceptionType,
      AsyncFunction<? super Throwable, ? extends V> fallback,
      Executor executor) {

      Executor executor) {
    return AbstractCatchingFuture.create(input, exceptionType, fallback, executor);
  }

  public static <V extends @Nullable Object> ListenableFuture<V> catchingAsync(
      ListenableFuture<? extends V> input,
      Class<Throwable> exceptionType,
      AsyncFunction<? super Throwable, ? extends V> fallback,
      Executor executor) {

   *
   * @param identifier short name for the bus, for logging purposes.
   * @param executor Executor to use to dispatch events. It is the caller's responsibility to shut
   *     down the executor after the last event has been posted to this event bus.
   */
  public AsyncEventBus(String identifier, Executor executor) {
    super(identifier, executor, Dispatcher.legacyAsync(), LoggingHandler.INSTANCE);
  }

  /**

            UpgradeContext context =
                    TestUtils.createMockContext(tempDir, TestUtils.createOptionsWithModelVersion("4.1.0"));

            // Execute apply goal
            int result = applyGoal.execute(context);

            // Verify success
            assertEquals(0, result, "Apply should succeed");

            // Verify POM was upgraded

      @Override
      public Thread newThread(Runnable r) {
        return new Thread(r);
      }
    }

    @Keep
    public static final class DummyExecutor implements Executor, Serializable {
      @Override
      public void execute(Runnable command) {}
    }
  }

  private static final class NullByteSink extends ByteSink implements Serializable {
    private static final NullByteSink INSTANCE = new NullByteSink();

HSPLandroidx/arch/core/executor/ArchTaskExecutor;-><init>()V
HSPLandroidx/arch/core/executor/ArchTaskExecutor;->getInstance()Landroidx/arch/core/executor/ArchTaskExecutor;
HSPLandroidx/arch/core/executor/DefaultTaskExecutor$1;-><init>(Landroidx/arch/core/executor/DefaultTaskExecutor;)V
HSPLandroidx/arch/core/executor/DefaultTaskExecutor;-><init>()V
HSPLandroidx/arch/core/executor/DefaultTaskExecutor;->isMainThread()Z
HSPLandroidx/arch/core/executor/TaskExecutor;-><init>()V

  }

  public void testNoOpScheduledExecutorShutdown() {
    ListeningScheduledExecutorService executor = TestingExecutors.noOpScheduledExecutor();
    assertFalse(executor.isShutdown());
    assertFalse(executor.isTerminated());
    executor.shutdown();
    assertTrue(executor.isShutdown());
    assertTrue(executor.isTerminated());
  }

  }

  public void testNoOpScheduledExecutorShutdown() {
    ListeningScheduledExecutorService executor = TestingExecutors.noOpScheduledExecutor();
    assertFalse(executor.isShutdown());
    assertFalse(executor.isTerminated());
    executor.shutdown();
    assertTrue(executor.isShutdown());
    assertTrue(executor.isTerminated());
  }