Por exemplo, em uma das maneiras que a especificação OAuth2 pode ser usada (chamada "fluxo de senha"), é necessário enviar um `username` e uma `password` como campos do formulário.

A <abbr title="especificação">spec</abbr> exige que os campos sejam exatamente nomeados como `username` e `password` e sejam enviados como campos de formulário, não JSON.

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		_, err = sshPasswordAuth(newSSHCon, []byte("dillon"))
		if err != nil {
			c.Fatal("Password authentication failed for user (dillon):", err)
		}

		newSSHCon = newSSHConnMock("dillon")
		_, err = sshPasswordAuth(newSSHCon, []byte("dillon"))
		if err != nil {
			c.Fatal("Password authentication failed for user (dillon):", err)
		}
	}
	{
		userDN := "uid=fahim,ou=people,ou=swengg,dc=min,dc=io"

            String username = System.getenv("MVNW_USERNAME");
            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
            Authenticator.setDefault(new Authenticator() {
                @Override
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(username, password);
                }
            });
        }

```
MINIO_IDENTITY_LDAP_LOOKUP_BIND_DN*          (string)    DN for LDAP read-only service account used to perform DN and group lookups
MINIO_IDENTITY_LDAP_LOOKUP_BIND_PASSWORD     (string)    Password for LDAP read-only service account used to perform DN and group lookups
```

topic            (string)    Kafka topic used for bucket notifications
sasl_username    (string)    username for SASL/PLAIN or SASL/SCRAM authentication
sasl_password    (string)    password for SASL/PLAIN or SASL/SCRAM authentication
sasl_mechanism   (string)    sasl authentication mechanism, default 'plain'
tls_client_auth  (string)    clientAuth determines the Kafka server's policy for TLS client auth

Например, в одном из способов использования спецификации OAuth2 (называемом "потоком пароля") требуется отправить `username` и `password` в виде полей формы.

Данный способ требует отправку данных для авторизации посредством формы (а не JSON) и обязательного наличия в форме строго именованных полей  `username` и `password`.

}

func TestExplainSQL(t *testing.T) {
	type role string
	type password []byte
	type intType int
	type floatType float64
	var (
		tt                 = now.MustParse("2020-02-23 11:10:10")
		myrole             = role("admin")
		pwd                = password("pass")
		jsVal              = []byte(`{"Name":"test","Val":"test"}`)
		js                 = JSON(jsVal)

If a client tries to send some extra data, they will receive an **error** response.

For example, if the client tries to send the form fields:

* `username`: `Rick`
* `password`: `Portal Gun`
* `extra`: `Mr. Poopybutthole`

They will receive an error response telling them that the field `extra` is not allowed:

```json
{
    "detail": [
        {

`Body`や`Query`の場合と同じようにフォームパラメータを作成します:

{* ../../docs_src/request_forms/tutorial001.py hl[7] *}

例えば、OAuth2仕様が使用できる方法の１つ（「パスワードフロー」と呼ばれる）では、フォームフィールドとして`username`と`password`を送信する必要があります。

<abbr title="仕様">仕様</abbr>では、フィールドの名前が`username`と`password`であることと、JSONではなくフォームフィールドとして送信されることを要求しています。

`Form`では`Body`（および`Query`や`Path`、`Cookie`）と同じメタデータとバリデーションを宣言することができます。

/// info | 情報

`Form`は`Body`を直接継承するクラスです。

///