self,
        default: Any = Undefined,
        *,
        default_factory: Union[Callable[[], Any], None] = _Unset,
        annotation: Optional[Any] = None,
        media_type: str = "application/x-www-form-urlencoded",
        alias: Optional[str] = None,
        alias_priority: Union[int, None] = _Unset,
        validation_alias: Union[str, AliasPath, AliasChoices, None] = None,
        serialization_alias: Union[str, None] = None,

	// Assume roles with no JWT, handles AssumeRole.
	stsRouter.Methods(http.MethodPost).MatcherFunc(func(r *http.Request, rm *mux.RouteMatch) bool {
		ctypeOk := wildcard.MatchSimple("application/x-www-form-urlencoded*", r.Header.Get(xhttp.ContentType))
		authOk := wildcard.MatchSimple(signV4Algorithm+"*", r.Header.Get(xhttp.Authorization))
		noQueries := len(r.URL.RawQuery) == 0
		return ctypeOk && authOk && noQueries

	if err != nil {
		return "", fmt.Errorf("new request err (/login): %v", err)
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	_, err = dexClient.Do(req)
	if err != nil {
		return "", fmt.Errorf("post form err: %v", err)
	}
	// fmt.Printf("resp: %#v %#v\n", resp.StatusCode, resp.Header)
	// bodyBuf, err := io.ReadAll(resp.Body)

   *
   * @since 15.0
   */
  public static final MediaType EPUB = createConstant(APPLICATION_TYPE, "epub+zip");

  public static final MediaType FORM_DATA =
      createConstant(APPLICATION_TYPE, "x-www-form-urlencoded");

  /**
   * As described in <a href="https://www.rsa.com/rsalabs/node.asp?id=2138">PKCS #12: Personal
   * Information Exchange Syntax Standard</a>, PKCS #12 defines an archive file format for storing

            generated OpenAPI, but currently it doesn't affect the parsing of the data.
            """
        ),
    ] = "application/x-www-form-urlencoded",
    alias: Annotated[
        Optional[str],
        Doc(
            """
            An alternative name for the parameter field.

the API, in 1.2 you will either receive a 415 or 406 error.
The only client
this is known to affect is curl when you use -d with JSON but don't set a
content type, helpfully sends "application/x-www-urlencoded", which is not
correct.
Other client authors should double check that you are sending proper
accept and content type headers, or set no value (in which case JSON is the
default).
An example using curl:

   *
   * @since 15.0
   */
  public static final MediaType EPUB = createConstant(APPLICATION_TYPE, "epub+zip");

  public static final MediaType FORM_DATA =
      createConstant(APPLICATION_TYPE, "x-www-form-urlencoded");

  /**
   * As described in <a href="https://www.rsa.com/rsalabs/node.asp?id=2138">PKCS #12: Personal
   * Information Exchange Syntax Standard</a>, PKCS #12 defines an archive file format for storing