The media type of this parameter field. Changing it would affect the
            generated OpenAPI, but currently it doesn't affect the parsing of the data.
            """
        ),
    ] = "application/json",
    alias: Annotated[
        Optional[str],
        Doc(
            """
            An alternative name for the parameter field.

func (a *Args) Validate() error {
	req, err := http.NewRequest(http.MethodPost, a.URL.String(), bytes.NewReader([]byte("")))
	if err != nil {
		return err
	}

	req.Header.Set("Content-Type", "application/json")
	if a.AuthToken != "" {
		req.Header.Set("Authorization", a.AuthToken)
	}

	client := &http.Client{Transport: a.Transport}
	resp, err := client.Do(req)
	if err != nil {
		return err
	}

/// tip

This is a somewhat advanced technique, and in most of the cases you won't really need it, as you can raise exceptions (including `HTTPException`) from inside of the rest of your application code, for example, in the *path operation function*.

But it's there for you if you need it. 🤓

///

//// tab | Python 3.9+

```Python hl_lines="18-22  31"

{!> ../../docs_src/response_model/tutorial003_05.py!}
```

////

This will make FastAPI skip the response model generation and that way you can have any return type annotations you need without it affecting your FastAPI application. 🤓

## Response Model encoding parameters

Your response model could have default values, like:

//// tab | Python 3.10+

```Python hl_lines="9  11-12"

<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title><la:message key="labels.search_title" /></title>
<c:if test="${osddLink}">
	<link rel="search" type="application/opensearchdescription+xml" href="${fe:url('/osdd')}"
		title="<la:message key="labels.index_osdd_title" />"
	/>
</c:if>
<link href="${fe:url('/css/bootstrap.min.css')}" rel="stylesheet" type="text/css" />

                          "on_match": {
                            "matcher": {
                              "matcher_tree": {
                                "input": {
                                  "name": "application-protocol",
                                  "typed_config": {
                                    "@type": "type.googleapis.com/envoy.extensions.matching.common_inputs.network.v3.ApplicationProtocolInput"

   * registry suffixes, since domain name registries collectively control all internet domain names.
   *
   * <p>For considerations on whether the public suffix or registry suffix designation is more
   * suitable for your application, see <a
   * href="https://github.com/google/guava/wiki/InternetDomainNameExplained">this article</a>.
   *
   * @return {@code true} if this domain name appears exactly on the public suffix list
   * @since 6.0
   */

     *
     * Using DoubleUtils.bigToDouble, getting a double approximation of x is extremely fast, and
     * then we can get a double approximation of the square root. Then, we iteratively improve this
     * guess with an application of Newton's method, which sets guess := (guess + (x / guess)) / 2.
     * This iteration has the following two properties:
     *
     * a) every iteration (except potentially the first) has guess >= floor(sqrt(x)). This is

		maxWorkers:  int64(maxWorkers),
		httpTimeout: config.HTTPTimeout,
	}
	h.status.Store(statusOffline)

	if config.BatchSize > 1 {
		h.payloadType = ""
	} else {
		h.payloadType = "application/json"
	}

	// If proxy available, set the same
	if h.config.Proxy != "" {
		proxyURL, _ := url.Parse(h.config.Proxy)
		transport := h.config.Transport
		ctransport := transport.(*http.Transport).Clone()

under the new version. Except as expressly stated in Sections 2(a) and 2(b)
above, Recipient receives no rights or licenses to the intellectual property
of any Contributor under this Agreement, whether expressly, by implication,
estoppel or otherwise. All rights in the Program not expressly granted under
this Agreement are reserved.

This Agreement is governed by the laws of the State of New York and the intellectual