出于方便，**FastAPI** 会提供与 `starlette.responses` 相同的 `fastapi.responses` 给开发者。但是大多数可用的响应都直接来自 Starlette。

///

## 返回自定义 `Response`

上面的例子展示了需要的所有部分，但还不够实用，因为你本可以只是直接返回 `item`，而**FastAPI** 默认帮你把这个 `item` 放到 `JSONResponse` 中，又默认将其转换成了 `dict`等等。

现在，让我们看看你如何才能返回一个自定义的响应。

假设你想要返回一个 <a href="https://en.wikipedia.org/wiki/XML" class="external-link" target="_blank">XML</a> 响应。

  TF_DataType dtype;
};

typedef struct TF_ShapeAndType TF_ShapeAndType;

// A list of TF_ShapeAndType elements..
struct TF_ShapeAndTypeList {
  int num_items;
  TF_ShapeAndType* items;
};
typedef struct TF_ShapeAndTypeList TF_ShapeAndTypeList;

// API for manipulating TF_ShapeAndTypeList objects.
//
TF_CAPI_EXPORT extern TF_ShapeAndTypeList* TF_NewShapeAndTypeList(
    int num_shapes);

    approved_reviews = [
        review for review in review_by_user.values() if review.state == "APPROVED"
    ]
    config = settings.config or default_config
    for approved_label, conf in config.items():
        logging.debug(f"Processing config: {conf.json()}")
        if conf.await_label is None or (conf.await_label in pr_label_by_name):
            logging.debug(f"Processable PR: {pr.number}")

				}
			}
			var match BatchJobExpireFilter
			var found bool
			for _, rule := range r.Rules {
				if rule.Matches(result.Item, now) {
					match = rule
					found = true
					break
				}
			}
			if !found {
				continue
			}

			prevObj = result.Item
			matchedFilter = match
			versionsCount = 1
			// Include the latest version
			if matchedFilter.Purge.RetainVersions == 0 {

        }
        NodeList otherContent = classDoc.getClassSection().getChildNodes();
        for (int i = 0; i < otherContent.getLength(); i++) {
            Node child = otherContent.item(i);
            if (child instanceof Element && !((Element) child).getTagName().equals("section")) {
                parent.appendChild(document.importNode(child, true));
            }
        }
    }

                    // Filtering an array is NOT in place
                    result.acceptedApiChanges = result.acceptedApiChanges.filter((item, pos, ary) => (!pos || (JSON.stringify(item) != JSON.stringify(ary[pos - 1]))));
                    return result;
                }

                function acceptAllErrorCorrections() {

* `externalDocs`: 외부 문서를 설명하는 `dict`이며:
    * `description`: 외부 문서에 대한 간단한 설명을 담은 `str`입니다.
    * `url` (**필수**): 외부 문서의 URL을 담은 `str`입니다.

### 태그에 대한 메타데이터 생성

`users` 및 `items`에 대한 태그 예시와 함께 메타데이터를 생성하고 이를 `openapi_tags` 매개변수로 전달해 보겠습니다:

```Python hl_lines="3-16  18"
{!../../docs_src/metadata/tutorial004.py!}
```

    * `url` (**obrigatório**): uma `str` com a URL da documentação externa.

### Criar Metadados para tags

Vamos tentar isso em um exemplo com tags para `users` e `items`.

Crie metadados para suas tags e passe-os para o parâmetro `openapi_tags`:

```Python hl_lines="3-16  18"
{!../../docs_src/metadata/tutorial004.py!}
```

                <mxCell id="17" value="&lt;span style=&quot;font-family: &amp;#34;roboto&amp;#34; ; font-size: 24px&quot;&gt;Module app.routers.items&lt;/span&gt;&lt;br style=&quot;font-family: &amp;#34;roboto&amp;#34; ; font-size: 24px&quot;&gt;&lt;span style=&quot;font-family: &amp;#34;roboto&amp;#34; ; font-size: 24px&quot;&gt;app/routers/items.py&lt;/span&gt;" style="shape=hexagon;perimeter=hexagonPerimeter2;whiteSpace=wrap;html=1;fixedSize=1;strokeWidth=3;" parent="1" vertex="1">

			}
		}
		return true
	})

	if iamOS, ok := store.IAMStorageAPI.(*IAMObjectStore); ok {
		for item := range listIAMConfigItems(context.Background(), iamOS.objAPI, iamConfigPrefix+SlashSeparator+policyDBSTSUsersListKey) {
			user := strings.TrimSuffix(item.Item, ".json")
			if userPredicate != nil && !userPredicate(user) {
				continue
			}

			decodeUser := user