"content": {
            "name": "Maaaagic",
            "price": 42,
            "description": "Just kiddin', no magic here. ✨",
        },
    }


@app.post(
    "/items/",
    openapi_extra={
        "requestBody": {
            "content": {
                "application/json": {
                    "schema": {
                        "required": ["name", "price"],

t?e=>t(e,this._element):t}_resolvePossibleFunction(t){return v(t,[this._element])}_getPopperConfig(t){const e={placement:t,modifiers:[{name:"flip",options:{fallbackPlacements:this._config.fallbackPlacements}},{name:"offset",options:{offset:this._getOffset()}},{name:"preventOverflow",options:{boundary:this._config.boundary}},{name:"arrow",options:{element:`.${this.constructor.NAME}-arrow`}},{name:"preSetPlacement",enabled:!0,phase:"beforeMain",fn:t=>{this._getTipElement().setAttribute("data-popper-placement",t.st...

-->
<super-source path="super"/>

<inherits name="com.google.common.annotations.Annotations" />
<inherits name="com.google.common.base.Base" />
<inherits name="com.google.common.collect.Collect" />
<inherits name="com.google.gwt.core.Core" />
<inherits name="com.google.gwt.user.User" />

-->
<super-source path="super"/>

<inherits name="com.google.common.annotations.Annotations" />
<inherits name="com.google.common.base.Base" />
<inherits name="com.google.common.escape.Escape" />
<inherits name="com.google.gwt.core.Core" />
<inherits name="com.google.gwt.user.User" />

        labelTypePager.name = "testName";
        labelTypePager.versionNo = "1";
        labelTypePager.setAllRecordCount(100);
        labelTypePager.setAllPageCount(10);
        labelTypePager.setExistPrePage(true);
        labelTypePager.setExistNextPage(true);

        labelTypePager.clear();

        assertNull(labelTypePager.id);
        assertNull(labelTypePager.name);
        assertNull(labelTypePager.versionNo);

        roleTypePager.name = "testName";
        roleTypePager.versionNo = "1";
        roleTypePager.setAllRecordCount(100);
        roleTypePager.setAllPageCount(10);
        roleTypePager.setExistPrePage(true);
        roleTypePager.setExistNextPage(true);

        roleTypePager.clear();

        assertNull(roleTypePager.id);
        assertNull(roleTypePager.name);
        assertNull(roleTypePager.versionNo);

  </parent>

  <groupId>inheritance</groupId>
  <artifactId>child-artifact-id</artifactId>
  <version>11-SNAPSHOT</version>
  <name>Model urls inheritance test child</name>
  <description>Most classical case: child in direct subdirectory with directory name == child artifactId</description>

  <!-- 5 inherited urls with ${project.artifactId} added to parent -->

    <artifactId>parent</artifactId>
    <version>11-SNAPSHOT</version>
  </parent>

  <groupId>inheritance</groupId>
  <artifactId>inheritance</artifactId>
  <version>11-SNAPSHOT</version>
  <name>Model urls inheritance test child</name>

  <scm child.scm.connection.inherit.append.path="false"
       child.scm.developerConnection.inherit.append.path="false"
       child.scm.url.inherit.append.path="false">

<div class="wrapper">
    <jsp:include page="/WEB-INF/view/common/admin/header.jsp"></jsp:include>
    <jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
        <jsp:param name="menuCategoryType" value="crawl"/>
        <jsp:param name="menuType" value="pathMapping"/>
    </jsp:include>
    <main class="content-wrapper">
        <div class="content-header">
            <div class="container-fluid">

from typing import Optional


def say_hi(name: Optional[str]):
    print(f"Hey {name}!")
```

參數 `name` 被標註為 `Optional[str]`，但它並不是可選的；你不能在沒有該參數的情況下呼叫這個函式：

```Python
say_hi()  # 糟了，這會拋出錯誤！😱
```

參數 `name` 仍是必填（不是可選），因為它沒有預設值。不過，`name` 可以接受 `None` 作為值：

```Python
say_hi(name=None)  # 這可行，None 是有效的 🎉
```

好消息是，多數情況下你可以直接用 `|` 來定義型別聯集：

```python
def say_hi(name: str | None):
    print(f"Hey {name}!")