{* ../../docs_src/response_model/tutorial006_py310.py hl[29,35] *}

## Recap { #recap }

Use the *path operation decorator's* parameter `response_model` to define response models and especially to ensure private data is filtered out.

 *       occurs between when one subscriber is removed and the next subscriber is added, the event
 *       is dropped.
 *   <li>Its performance is suboptimal, especially under Android.
 *   <li>It <a href="https://github.com/google/guava/issues/1431">doesn't support parameterized
 *       types</a>.
 *   <li>With the introduction of lambdas in Java 8, EventBus went from less verbose than listeners

///

* Um `client_id` opcional (não precisamos dele em nosso exemplo).
* Um `client_secret` opcional (não precisamos dele em nosso exemplo).

/// info | Informação

O `OAuth2PasswordRequestForm` não é uma classe especial para **FastAPI** como é `OAuth2PasswordBearer`.

`OAuth2PasswordBearer` faz com que **FastAPI** saiba que é um esquema de segurança. Portanto, é adicionado dessa forma ao OpenAPI.

        checkNotNull(rowKey, "rowKey"),
        checkNotNull(columnKey, "columnKey"),
        checkNotNull(value, "value"));
  }

  /**
   * A builder for creating immutable table instances, especially {@code public static final} tables
   * ("constant tables"). Example:
   *
   * {@snippet :
   * static final ImmutableTable<Integer, Character, String> SPREADSHEET =

Não tínhamos uma maneira de **atualizar um hero** na versão anterior do app, mas agora com **múltiplos modelos**, podemos fazer isso. 🎉

In some occasions it might be useful to provide the settings from a dependency, instead of having a global object with `settings` that is used everywhere.

This could be especially useful during testing, as it's very easy to override a dependency with your own custom settings.

### The config file { #the-config-file }

Coming from the previous example, your `config.py` file could look like:

 * CacheLoader}</a>, etc.), so you can use Caffeine without needing to use any Guava types.
 * Caffeine's types are better than Guava's, especially for <a
 * href="https://www.javadoc.io/doc/com.github.ben-manes.caffeine/caffeine/latest/com.github.benmanes.caffeine/com/github/benmanes/caffeine/cache/AsyncLoadingCache.html">their

   * Builder} constructor.
   */
  public static <E> Builder<E> builder() {
    return new Builder<>();
  }

  /**
   * A builder for creating immutable multiset instances, especially {@code public static final}
   * multisets ("constant multisets"). Example:
   *
   * {@snippet :
   * public static final ImmutableMultiset<Bean> BEANS =
   *     new ImmutableMultiset.Builder<Bean>()

    checkNonnegative(expectedSize, "expectedSize");
    return new Builder<>(expectedSize);
  }

  /**
   * A builder for creating immutable bimap instances, especially {@code public static final} bimaps
   * ("constant bimaps"). Example:
   *
   * {@snippet :
   * static final ImmutableBiMap<String, Integer> WORD_TO_INT =
   *     new ImmutableBiMap.Builder<String, Integer>()

The end result is that the item paths are now:

* `/items/`
* `/items/{item_id}`

...as we intended.

* They will be marked with a list of tags that contain a single string `"items"`.
    * These "tags" are especially useful for the automatic interactive documentation systems (using OpenAPI).
* All of them will include the predefined `responses`.
* All these *path operations* will have the list of `dependencies` evaluated/executed before them.