}
}

// AdditionalHeader parses a single Additional ResourceHeader.
func (p *Parser) AdditionalHeader() (ResourceHeader, error) {
	return p.resourceHeader(sectionAdditionals)
}

// Additional parses a single Additional Resource.
func (p *Parser) Additional() (Resource, error) {
	return p.resource(sectionAdditionals)
}

// AllAdditionals parses all Additional Resources.

		rh: func(_, _ string, q dnsmessage.Message, _ time.Time) (dnsmessage.Message, error) {
			if len(q.Additionals) == 0 {
				t.Error("missing EDNS record")
			} else if opt, ok := q.Additionals[0].Body.(*dnsmessage.OPTResource); !ok {
				t.Errorf("additional record type %T, expected OPTResource", q.Additionals[0])
			} else if len(opt.Options) != 0 {
				t.Errorf("found %d Options, expected none", len(opt.Options))

# Additional Responses in OpenAPI

!!! warning
    This is a rather advanced topic.

    If you are starting with **FastAPI**, you might not need this.

You can declare additional responses, with additional status codes, media types, descriptions, etc.

Those additional responses will be included in the OpenAPI schema, so they will also appear in the API docs.

# Additional Status Codes

By default, **FastAPI** will return the responses using a `JSONResponse`, putting the content you return from your *path operation* inside of that `JSONResponse`.

It will use the default status code or the one you set in your *path operation*.

## Additional status codes

Die generierten Responses in der OpenAPI für diese *Pfadoperation* lauten:

```JSON hl_lines="3-12"
{
    "responses": {
        "404": {
            "description": "Additional Response",
            "content": {
                "application/json": {
                    "schema": {
                        "$ref": "#/components/schemas/Message"
                    }
                }

🏗 📨 🗄 👉 *➡ 🛠️* 🔜:

```JSON hl_lines="3-12"
{
    "responses": {
        "404": {
            "description": "Additional Response",
            "content": {
                "application/json": {
                    "schema": {
                        "$ref": "#/components/schemas/Message"
                    }
                }

## OpenAPIとAPIドキュメント

ステータスコードとレスポンスを直接返す場合、それらはOpenAPIスキーマ (APIドキュメント) には含まれません。なぜなら、FastAPIは何が返されるのか事前に知ることができないからです。

**在OpenAPI中为该路径操作生成的响应将是：**

```json hl_lines="3-12"
{
    "responses": {
        "404": {
            "description": "Additional Response",
            "content": {
                "application/json": {
                    "schema": {
                        "$ref": "#/components/schemas/Message"
                    }
                }

Les réponses générées au format OpenAPI pour cette *opération de chemin* seront :

```JSON hl_lines="3-12"
{
    "responses": {
        "404": {
            "description": "Additional Response",
            "content": {
                "application/json": {
                    "schema": {
                        "$ref": "#/components/schemas/Message"
                    }
                }

directamente, estas no estarán incluidas en el schema de OpenAPI (documentación de API), porque FastAPI no tiene una manera de conocer de antemano lo que vas a devolver.

Pero puedes documentar eso en tu código usando [Respuestas Adicionales](additional-responses.md){.internal-link target=_blank}....