You don't even have to check if the token exists to return an error. You can be sure that if your function is executed, it will have a `str` in that token.

You can try it already in the interactive docs:

<img src="/img/tutorial/security/image03.png">

We are not verifying the validity of the token yet, but that's a start already.

                    -1,
                    -1,
                    e);
        }

        interpolator.addPostProcessor(new InterpolationPostProcessor() {
            @Override
            public Object execute(String expression, Object value) {
                if (value != null) {
                    // we're going to parse this back in as XML so we need to escape XML markup
                    value = value.toString()

title %0
@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%

@REM set %HOME% to equivalent of $HOME
if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")

@REM Execute a user defined script before this one
if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
@REM check for pre script, once with legacy .bat ending and once with .cmd ending
if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"

{* ../../docs_src/security/tutorial006_an_py39.py hl[4,8,12] *}

Wenn Sie versuchen, die URL zum ersten Mal zu öffnen (oder in der Dokumentation auf den Button „Execute“ zu klicken), wird der Browser Sie nach Ihrem Benutzernamen und Passwort fragen:

<img src="/img/tutorial/security/image12.png">

## Den Benutzernamen überprüfen { #check-the-username }

    client =
      client
        .newBuilder()
        .addNetworkInterceptor(
          Interceptor { chain: Interceptor.Chain? ->
            throw AssertionError() // Network interceptors don't execute.
          },
        ).build()
    webServer.enqueue(
      MockResponse
        .Builder()
        .webSocketUpgrade(serverListener)
        .build(),
    )

	return cs.processors["delete"]
}

func (cs *callbacks) Row() *processor {
	return cs.processors["row"]
}

func (cs *callbacks) Raw() *processor {
	return cs.processors["raw"]
}

func (p *processor) Execute(db *DB) *DB {
	// call scopes
	for len(db.Statement.scopes) > 0 {
		db = db.executeScopes()
	}

	var (
		curTime           = time.Now()
		stmt              = db.Statement
		resetBuildClauses bool
	)

    val call1 = client.newCall(newRequest("/"))
    val response1 = call1.execute()
    val in1 = response1.body.byteStream()
    assertThat(readAscii(in1, 5)).isEqualTo("ABCDE")
    in1.close()
    call1.cancel()
    val call2 = client.newCall(newRequest("/"))
    val response2 = call2.execute()
    val in2 = response2.body.byteStream()
    assertThat(readAscii(in2, 5)).isEqualTo("LMNOP")

#
#   JAVA_HOME           (Optional) Points to a Java installation.
#   MAVEN_ARGS          (Optional) Arguments passed to Maven before CLI arguments.
#   MAVEN_OPTS          (Optional) Java runtime options used when Maven is executed.
#   MAVEN_SKIP_RC       (Optional) Flag to disable loading of mavenrc files.

<div class="termy">

```console
$ pip install pytest

---> 100%
```

</div>

It will detect the files and tests automatically, execute them, and report the results back to you.

Run the tests with:

<div class="termy">

```console
$ pytest

================ test session starts ================

Você pode lê-lo para entender melhor o que mudou.

## Testes { #tests }

Garanta que você tenha [testes](../tutorial/testing.md){.internal-link target=_blank} para sua aplicação e que os execute na integração contínua (CI).

Assim, você pode fazer a atualização e garantir que tudo continua funcionando como esperado.

## `bump-pydantic` { #bump-pydantic }