public static final String SEC_FETCH_MODE = "Sec-Fetch-Mode";

  /**
   * The HTTP <a href="https://w3c.github.io/webappsec-fetch-metadata/">{@code Sec-Fetch-Site}</a>
   * header field name.
   *
   * @since 27.1
   */
  public static final String SEC_FETCH_SITE = "Sec-Fetch-Site";

  /**
   * The HTTP <a href="https://w3c.github.io/webappsec-fetch-metadata/">{@code Sec-Fetch-User}</a>
   * header field name.
   *

				return
			}
		}()
		h.ServeHTTP(w, r)
	})
}

// setUploadForwardingMiddleware middleware forwards multiparts requests
// in a site replication setup to peer that initiated the upload
func setUploadForwardingMiddleware(h http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

func (b BucketMetadata) ObjectLocking() bool {
	return b.LockEnabled || (b.objectLockConfig != nil && b.objectLockConfig.Enabled())
}

// SetCreatedAt preserves the CreatedAt time for bucket across sites in site replication. It defaults to
// creation time of bucket on this cluster in all other cases.
func (b *BucketMetadata) SetCreatedAt(createdAt time.Time) {
	if b.Created.IsZero() {
		b.Created = UTCNow()
	}

  /*
   * We have some considerable complexity in these create methods because of
   * Builder.buildKeepingLast(). The same Builder might be called with buildKeepingLast() and then
   * buildOrThrow(), or vice versa. So in particular, if we modify alternatingKeysAndValues to
   * eliminate duplicate keys (for buildKeepingLast()) then we have to ensure that a later call to

	})
	return mg
}

// replication metrics for site replication
func getReplicationSiteMetrics(opts MetricsGroupOpts) *MetricsGroupV2 {
	mg := &MetricsGroupV2{
		cacheInterval:    1 * time.Minute,
		metricsGroupOpts: opts,
	}
	mg.RegisterRead(func(_ context.Context) []MetricV2 {
		ml := []MetricV2{}

		// metrics pertinent to site replication - overall roll up.

///

### Importar las dependencias

Este código vive en el módulo `app.routers.items`, el archivo `app/routers/items.py`.

Y necesitamos obtener la función de dependencia del módulo `app.dependencies`, el archivo `app/dependencies.py`.

		nsecret, err := getTokenSigningKey()
		if err != nil {
			return nil, toAPIErrorCode(r.Context(), err)
		}
		// sign root's temporary accounts also with site replicator creds
		if cred.ParentUser != globalActiveCred.AccessKey || cred.IsTemp() {
			secret = nsecret
		}
	}
	if cred.IsServiceAccount() {
		token = cred.SessionToken
		secret = cred.SecretKey
	}

Validaciones genéricas y metadatos:

* `alias`
* `title`
* `description`
* `deprecated`

Validaciones específicas para strings:

* `min_length`
* `max_length`
* `pattern`

En estos ejemplos viste cómo declarar validaciones para valores de tipo `str`.

```

////

#### Utilizando `Union` ou `Optional`

Se você está utilizando uma versão do Python abaixo da 3.10, aqui vai uma dica do meu ponto de vista bem **subjetivo**:

* 🚨 Evite utilizar `Optional[SomeType]`
* No lugar, ✨ **use `Union[SomeType, None]`** ✨.

func (h *healSequence) healItems(objAPI ObjectLayer) error {
	if h.clientToken == bgHealingUUID {
		// For background heal do nothing.
		return nil
	}

	if h.bucket == "" { // heal internal meta only during a site-wide heal
		if err := h.healDiskMeta(objAPI); err != nil {
			return err
		}
	}

	// Heal buckets and objects
	return h.healBuckets(objAPI)
}