* @return a new {@link Options} instance with interpolated values
     */
    @Nonnull
    Options interpolate(@Nonnull UnaryOperator<String> callback);

    /**
     * Emits warning messages if deprecated options are used.
     *
     * @param printWriter the string consumer to use for output
     */

这相当于：

```Python
response = client.get('/')
```

我们曾经通过它向 `TestClient` 发出请求。

/// tip

请注意，我们正在将 async/await 与新的 `AsyncClient` 一起使用——请求是异步的。

///

/// warning

如果您的应用程序依赖于生命周期事件， `AsyncClient` 将不会触发这些事件。为了确保它们被触发，请使用 <a href="https://github.com/florimondmanca/asgi-lifespan#usage" class="external-link" target="_blank">florimondmanca/asgi-lifespan</a> 中的 `LifespanManager` 。

///

                    </div>
                </div>
            </div>
            <div class="row">
                <div class="col-md-6">
                    <div class="card card-outline card-warning">
                        <div class="card-header">
                            <h3 class="card-title">
                                <la:message key="labels.system_info_fess_prop_title"/>
                            </h3>

  @ParametricNullness
  T apply(@ParametricNullness F input);

  /**
   * <i>May</i> return {@code true} if {@code obj} is a {@code Function} that behaves identically to
   * this function.
   *
   * <p><b>Warning: do not depend</b> on the behavior of this method.
   *
   * <p>Historically, {@code Function} instances in this library have implemented this method to

# ↔ 🗄

/// warning

👉 👍 🏧 ⚒. 👆 🎲 💪 🚶 ⚫️.

🚥 👆 📄 🔰 - 👩‍💻 🦮, 👆 💪 🎲 🚶 👉 📄.

🚥 👆 ⏪ 💭 👈 👆 💪 🔀 🏗 🗄 🔗, 😣 👂.

///

📤 💼 🌐❔ 👆 💪 💪 🔀 🏗 🗄 🔗.

👉 📄 👆 🔜 👀 ❔.

## 😐 🛠️

😐 (🔢) 🛠️, ⏩.

`FastAPI` 🈸 (👐) ✔️ `.openapi()` 👩‍🔬 👈 📈 📨 🗄 🔗.

🍕 🈸 🎚 🏗, *➡ 🛠️* `/openapi.json` (⚖️ ⚫️❔ 👆 ⚒ 👆 `openapi_url`) ®.

⚫️ 📨 🎻 📨 ⏮️ 🏁 🈸 `.openapi()` 👩‍🔬.

///

## Dependências com `yield`, `HTTPException`, `except` e Tarefas de Background

/// warning | Aviso

Você provavelmente não precisa desses detalhes técnicos, você pode pular essa seção e continuar na próxima seção abaixo.

th{border-color:#86cfda}.table-hover .table-info:hover{background-color:#abdde5}.table-hover .table-info:hover>td,.table-hover .table-info:hover>th{background-color:#abdde5}.table-warning,.table-warning>td,.table-warning>th{background-color:#ffeeba}.table-warning tbody+tbody,.table-warning td,.table-warning th,.table-warning thead th{border-color:#ffdf7e}.table-hover .table-warning:hover{background-color:#ffe8a1}.table-hover .table-warning:hover>td,.table-hover .table-warning:hover>th{background-co...

      this.method = null
      this.path = null
    }
  }

  @Deprecated(
    message = "Use body.readUtf8()",
    replaceWith = ReplaceWith("body.readUtf8()"),
    level = DeprecationLevel.WARNING,
  )
  fun getUtf8Body(): String = body.readUtf8()

  fun getHeader(name: String): String? = headers.values(name).firstOrNull()

  override fun toString(): String = requestLine

   */
  @ParametricNullness
  T get();

  /**
   * <i>May</i> return {@code true} if {@code object} is a {@code Supplier} that behaves identically
   * to this supplier.
   *
   * <p><b>Warning: do not depend</b> on the behavior of this method.
   *
   * <p>Historically, {@code Supplier} instances in this library have implemented this method to

[レスポンスを直接返す](response-directly.md){.internal-link target=_blank}で見たように、レスポンスを直接返すことで、*path operation* の中でレスポンスをオーバーライドできます。

上記と同じ例において、 `HTMLResponse` を返すと、このようになります:

{* ../../docs_src/custom_response/tutorial003.py hl[2,7,19] *}

/// warning | 注意

*path operation関数* から直接返される `Response` は、OpenAPIにドキュメントされず (例えば、 `Content-Type` がドキュメントされない) 、自動的な対話的ドキュメントからも閲覧できません。

///

/// info | 情報