User user1 = createTestUser("user1", "User One");
        User user2 = createTestUser("user2", "User Two");
        User user3 = createTestUser("user3", "User Three");

        chain.update(user1);
        chain.update(user2);
        chain.update(user3);

        assertEquals(3, chain.updateCalls.size());
        assertEquals(user1, chain.updateCalls.get(0));

Esto será especialmente útil cuando lo uses en una **gran code base** donde uses **las mismas dependencias** una y otra vez en **muchas *path operations***.

## Usar `async` o no usar `async` { #to-async-or-not-to-async }

     * @param userMessage the user's message
     * @param userId the user ID (can be null for anonymous users)
     * @return the chat response including session info and sources
     */
    public ChatResult chat(final String sessionId, final String userMessage, final String userId) {
        return chat(sessionId, userMessage, userId, Collections.emptyMap(), new String[0]);
    }

    /**

		t.Fatalf("no view should be created, got %v", err)
	}

	query := DB.Model(&User{}).
		Select("users.id as users_id, users.name as users_name, pets.id as pets_id, pets.name as pets_name").
		Joins("inner join pets on pets.user_id = users.id")

	if err := DB.Migrator().CreateView("users_pets", gorm.ViewOption{Query: query}); err != nil {

### `users` ve `items` için `APIRouter`’ları Dahil Edin { #include-the-apirouters-for-users-and-items }

Şimdi `users` ve `items` submodule’lerindeki `router`’ları dahil edelim:

{* ../../docs_src/bigger_applications/app_an_py310/main.py hl[10:11] title["app/main.py"] *}

/// info | Bilgi

`users.router`, `app/routers/users.py` dosyasının içindeki `APIRouter`’ı içerir.

### Inclure les `APIRouter` pour `users` et `items` { #include-the-apirouters-for-users-and-items }

Incluons maintenant les `router` des sous-modules `users` et `items` :

{* ../../docs_src/bigger_applications/app_an_py310/main.py hl[10:11] title["app/main.py"] *}

/// info

`users.router` contient le `APIRouter` à l'intérieur du fichier `app/routers/users.py`.

### Incluir los `APIRouter`s para `users` y `items` { #include-the-apirouters-for-users-and-items }

Ahora, incluyamos los `router`s de los submódulos `users` y `items`:

{* ../../docs_src/bigger_applications/app_an_py310/main.py hl[10:11] title["app/main.py"] *}

/// info | Información

`users.router` contiene el `APIRouter` dentro del archivo `app/routers/users.py`.

### Inclua os `APIRouter`s para `users` e `items` { #include-the-apirouters-for-users-and-items }

Agora, vamos incluir os `router`s dos submódulos `users` e `items`:

{* ../../docs_src/bigger_applications/app_an_py310/main.py hl[10:11] title["app/main.py"] *}

/// info | Informação

`users.router` contém o `APIRouter` dentro do arquivo `app/routers/users.py`.

### Подключение `APIRouter` для `users` и `items` { #include-the-apirouters-for-users-and-items }

Теперь давайте подключим `router` из подмодулей `users` и `items`:

{* ../../docs_src/bigger_applications/app_an_py310/main.py hl[10:11] title["app/main.py"] *}

/// info | Примечание

`users.router` содержит `APIRouter` из файла `app/routers/users.py`.

### Die `APIRouter` für `users` und `items` inkludieren { #include-the-apirouters-for-users-and-items }

Inkludieren wir nun die `router` aus diesen Submodulen `users` und `items`:

{* ../../docs_src/bigger_applications/app_an_py310/main.py hl[10:11] title["app/main.py"] *}

/// info | Info

`users.router` enthält den `APIRouter` in der Datei `app/routers/users.py`.