## Cas d'utilisation { #use-case }

Par exemple, imaginez que vous vouliez renvoyer par défaut un code d'état HTTP « OK » `200`.

Mais si les données n'existent pas, vous voulez les créer et renvoyer un code d'état HTTP « CREATED » `201`.

Mais vous souhaitez toujours pouvoir filtrer et convertir les données que vous renvoyez avec un `response_model`.

Pour ces cas, vous pouvez utiliser un paramètre `Response`.

    try {
      if (inheritableThreadLocals != null) {
        inheritableThreadLocals.set(thread, null);
      }
    } catch (Throwable t) {
      logger.log(
          Level.INFO,
          "Failed to clear thread local values inherited by reference finalizer thread.",
          t);
    }

    thread.start();
  }

  private final WeakReference<Class<?>> finalizableReferenceClassReference;

        factoryField.set(null, null);

        // Clear the protocol handlers cache
        Field handlersField = Handler.class.getDeclaredField("PROTOCOL_HANDLERS");
        handlersField.setAccessible(true);
        @SuppressWarnings("unchecked")
        Map<String, URLStreamHandler> handlers = (Map<String, URLStreamHandler>) handlersField.get(null);
        handlers.clear();
    }

    /**

    assertThat(notification.getCause()).isEqualTo(RemovalCause.REPLACED);
    assertThat(listener.isEmpty()).isTrue();

    // inactive
    Object value3 = new Object();
    map.clear();
    listener.clear();
    assertThat(segment.count).isEqualTo(0);
    table.set(index, entry);
    assertThat(segment.storeLoadedValue(key, hash, valueRef, value3)).isTrue();

    assertThat(notification.getCause()).isEqualTo(RemovalCause.REPLACED);
    assertThat(listener.isEmpty()).isTrue();

    // inactive
    Object value3 = new Object();
    map.clear();
    listener.clear();
    assertThat(segment.count).isEqualTo(0);
    table.set(index, entry);
    assertThat(segment.storeLoadedValue(key, hash, valueRef, value3)).isTrue();

  @Footprint(exclude = {Runnable.class, Executor.class, Thread.class, Exception.class})
  public Object measureSize() {
    for (Thread thread : blockedThreads) {
      thread.interrupt();
    }
    blockedThreads.clear();
    Facade<Object> f = impl.newFacade();
    for (int i = 0; i < numThreads; i++) {
      Thread thread =
          new Thread() {
            @Override
            public void run() {
              try {

    }

    @Override
    protected void openConnectionInternal() throws ConnectionException, AuthenticationException {}

    public void clearExpectedContent() {
        expectedContent.clear();
    }

# Modelos de Parâmetros de Consulta { #query-parameter-models }

Se você possui um grupo de **parâmetros de consultas** que são relacionados, você pode criar um **modelo Pydantic** para declará-los.

Isso permitiria que você **reutilizasse o modelo** em **diversos lugares**, e também declarasse validações e metadados de todos os parâmetros de uma única vez. 😎

/// note | Nota

Isso é suportado desde o FastAPI versão `0.115.0`. 🤓

///

    @Test
    public void test_doCrawl_withErrors() {
        // Clear any previous errors
        try {
            Field errorsField = Crawler.class.getDeclaredField("errors");
            errorsField.setAccessible(true);
            Queue<String> errors = (Queue<String>) errorsField.get(null);
            errors.clear();
        } catch (Exception e) {
            // Ignore if field doesn't exist
        }

                    Table<Integer, Character, String> table = HashBasedTable.create();
                    table.put(1, 'a', "foo");
                    table.clear();
                    populateForValues(table, elements);
                    return table.values();
                  }
                })
            .named("HashBasedTable.values")