TrustManagerFactory.getInstance(
        TrustManagerFactory.getDefaultAlgorithm(),
        provider,
      )
    factory.init(null as KeyStore?)
    val trustManagers = factory.trustManagers!!
    check(trustManagers.size == 1 && trustManagers[0] is X509TrustManager) {
      "Unexpected default trust managers: ${trustManagers.contentToString()}"
    }
    return trustManagers[0] as X509TrustManager
  }

O **FastAPI** irá **extrair** os dados de **cada campo** a partir dos **cabeçalhos** da requisição e te retornará o modelo do Pydantic que você definiu.

## Checando a documentação { #check-the-docs }

Você pode ver os headers necessários na interface gráfica da documentação em `/docs`:

<div class="screenshot">
<img src="/img/tutorial/header-param-models/image01.png">
</div>

**FastAPI** **extraerá** los datos para **cada campo** de los **headers** en el request y te dará el modelo Pydantic que definiste.

## Revisa la Documentación { #check-the-docs }

Puedes ver los headers requeridos en la interfaz de documentación en `/docs`:

<div class="screenshot">
<img src="/img/tutorial/header-param-models/image01.png">
</div>

		errCode := toAPIErrorCode(ctx, testCase.err)
		if errCode != testCase.errCode {
			t.Errorf("Test %d: Expected error code %d, got %d", i+1, testCase.errCode, errCode)
		}
	}
}

// Check if an API error is properly defined
func TestAPIErrCodeDefinition(t *testing.T) {
	for errAPI := ErrNone + 1; errAPI < apiErrCodeEnd; errAPI++ {
		errCode, ok := errorCodes[errAPI]
		if !ok {

// has reached zero, i.e when all the readers have given up their locks.
type RLockedFile struct {
	*LockedFile
	mutex sync.Mutex
	refs  int // Holds read lock refs.
}

// IsClosed - Check if the rlocked file is already closed.
func (r *RLockedFile) IsClosed() bool {
	r.mutex.Lock()
	defer r.mutex.Unlock()
	return r.refs == 0
}

// IncLockRef - is used by called to indicate lock refs.

in the event of a failed command. {{- if .Values.configPathmc }} MC_CONFIG_DIR="{{ .Values.configPathmc }}" MC="/usr/bin/mc --insecure --config-dir ${MC_CONFIG_DIR}" {{- else }} MC="/usr/bin/mc --insecure" {{- end }} # connectToMinio # Use a check-sleep-check loop to wait for MinIO service to be available connectToMinio() { SCHEME=$1 ATTEMPTS=0 ; LIMIT=29 ; # Allow 30 attempts set -e ; # fail if we can't read the keys. ACCESS=$(cat /config/rootUser) ; SECRET=$(cat /config/rootPassword) ; set +e ;...

in the event of a failed command. {{- if .Values.configPathmc }} MC_CONFIG_DIR="{{ .Values.configPathmc }}" MC="/usr/bin/mc --insecure --config-dir ${MC_CONFIG_DIR}" {{- else }} MC="/usr/bin/mc --insecure" {{- end }} # connectToMinio # Use a check-sleep-check loop to wait for MinIO service to be available connectToMinio() { SCHEME=$1 ATTEMPTS=0 ; LIMIT=29 ; # Allow 30 attempts set -e ; # fail if we can't read the keys. ACCESS=$(cat /config/rootUser) ; SECRET=$(cat /config/rootPassword) ; set +e ;...

        }
        return true;
      }
    }
    return true;
  }

  /**
   * Checks all the properties that should always hold of a map. Also calls {@link
   * #assertMoreInvariants} to check invariants that are peculiar to specific implementations.
   *
   * @see #assertMoreInvariants
   * @param map the map to check.
   */
  protected final void assertInvariants(Map<K, V> map) {
    Set<K> keySet = map.keySet();

/// tip

Notice that you are not passing the router itself (`invoices_callback_router`) to `callback=`, but the attribute `.routes`, as in `invoices_callback_router.routes`.

///

### Check the docs { #check-the-docs }

Now you can start your app and go to <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

# Server Workers - Uvicorn with Workers { #server-workers-uvicorn-with-workers }

Let's check back those deployment concepts from before:

* Security - HTTPS
* Running on startup
* Restarts
* **Replication (the number of processes running)**
* Memory
* Previous steps before starting