*   <li>{@link ImmutableBiMap}
 *   <li>{@link HashBiMap}
 *   <li>{@link EnumBiMap}
 *   <li>{@link EnumHashBiMap}
 * </ul>
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#bimap">{@code BiMap}</a>.
 *
 * @author Kevin Bourrillion
 * @since 2.0
 */
@GwtCompatible
public interface BiMap<K extends @Nullable Object, V extends @Nullable Object> extends Map<K, V> {

 * that affects its {@link Object#equals} behavior. Undefined behavior and bugs will result.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#multimap">{@code Multimap}</a>.
 *
 * @author Jared Levy
 * @since 2.0
 */
@GwtCompatible
public interface SetMultimap<K extends @Nullable Object, V extends @Nullable Object>

## 从 docstring 获取描述 { #description-from-docstring }

描述内容比较长且占用多行时，可以在函数的 <dfn title="作为函数内部的第一个表达式（不赋给任何变量）的多行字符串，用于文档用途">docstring</dfn> 中声明*路径操作*的描述，**FastAPI** 会从中读取。

文档字符串支持 [Markdown](https://en.wikipedia.org/wiki/Markdown)，能正确解析和显示 Markdown 的内容，但要注意文档字符串的缩进。

{* ../../docs_src/path_operation_configuration/tutorial004_py310.py hl[17:25] *}

它会在交互式文档中使用：

<img src="/img/tutorial/path-operation-configuration/image02.png">

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whm.nl-ams.scw.cloud
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wi.us
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wien.funkfeuer.at
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wiih.gov.pl
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windows
wine
winners
wios.gov.pl
witd.gov.pl
withgoogle.com
withyoutube.com
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wixsite.com

Now, let's see how you could use that to return a custom response.

Let's say that you want to return an [XML](https://en.wikipedia.org/wiki/XML) response.

You could put your XML content in a string, put that in a `Response`, and return it:

{* ../../docs_src/response_directly/tutorial002_py310.py hl[1,18] *}

Örneğin, birden fazla kez gelebilen `X-Token` header'ını tanımlamak için şöyle yazabilirsiniz:

{* ../../docs_src/header_params/tutorial003_an_py310.py hl[9] *}

Eğer bu *path operation* ile iki HTTP header göndererek iletişim kurarsanız:

```
X-Token: foo
X-Token: bar
```

response şöyle olur:

```JSON
{
    "X-Token values": [
        "bar",
        "foo"
    ]
}
```

/**
 * A map entry which forwards all its method calls to another map entry. Subclasses should override
 * one or more methods to modify the behavior of the backing map entry as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingMapEntry} forward <i>indiscriminately</i> to

 * concurrently and one of the threads modifies the table, it must be synchronized externally.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#table">{@code Table}</a>.
 *
 * @author Jared Levy
 * @since 7.0
 */
@GwtCompatible
public class HashBasedTable<R, C, V> extends StandardTable<R, C, V> {

 * Subclasses should override one or more methods to modify the behavior of the backing deque as
 * desired per the <a href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingBlockingDeque} forward <b>indiscriminately</b>