* will return {@code true} for many domains which (currently) are not hosts, such as {@code "com"},
 * but given that any public suffix may become a host without warning, it is better to err on the
 * side of permissiveness and thus avoid spurious rejection of valid sites. Of course, to actually
 * determine addressability of any host, clients of this class will need to perform their own DNS

você receberá a versão em texto:

```
1 validation error
path -> item_id
  value is not a valid integer (type=type_error.integer)
```

### `RequestValidationError` vs `ValidationError`

/// warning | "Aviso"

Você pode pular estes detalhes técnicos caso eles não sejam importantes para você neste momento.

///

                    throw e;
                }

                Severity severity = (modelSource instanceof FileModelSource) ? Severity.ERROR : Severity.WARNING;
                problems.add(new ModelProblemCollectorRequest(severity, ModelProblem.Version.V20)
                        .setMessage("Malformed POM " + modelSource.getLocation() + ": " + e.getMessage())

UserInDB(
    username = user_dict["username"],
    password = user_dict["password"],
    email = user_dict["email"],
    full_name = user_dict["full_name"],
    hashed_password = hashed_password,
)
```

/// warning | "Предупреждение"

Цель использованных в примере вспомогательных функций - не более чем демонстрация возможных операций с данными, но, конечно, они не обеспечивают настоящую безопасность.

///

UserInDB(
    username = user_dict["username"],
    password = user_dict["password"],
    email = user_dict["email"],
    full_name = user_dict["full_name"],
    hashed_password = hashed_password,
)
```

/// warning

As funções adicionais de suporte são apenas para demonstração de um fluxo possível dos dados, mas é claro que elas não fornecem segurança real.

///

## Reduzir duplicação

# Réponses supplémentaires dans OpenAPI

/// warning | "Attention"

Ceci concerne un sujet plutôt avancé.

Si vous débutez avec **FastAPI**, vous n'en aurez peut-être pas besoin.

///

Vous pouvez déclarer des réponses supplémentaires, avec des codes HTTP, des types de médias, des descriptions, etc.

Ces réponses supplémentaires seront incluses dans le schéma OpenAPI, elles apparaîtront donc également dans la documentation de l'API.

                if (!isValid) {
                    oauth2.errCb({
                        authId: oauth2.auth.name,
                        source: "auth",
                        level: "warning",
                        message: "Authorization may be unsafe, passed state was changed in server. The passed state wasn't returned from auth server."
                    });
                }

        }

        try {
            "".getBytes(DEFAULT_OEM_ENCODING);
        } catch (UnsupportedEncodingException uee) {
            if (log.level >= 2) {
                log.println("WARNING: The default OEM encoding " + DEFAULT_OEM_ENCODING +
                " does not appear to be supported by this JRE. The default encoding will be US-ASCII.");
            }
            DEFAULT_OEM_ENCODING = "US-ASCII";
        }

```Python hl_lines="22"
{!../../docs_src/events/tutorial003.py!}
```

## Alternative Events (deprecated)

/// warning | "Achtung"

   * Cache.asMap().putIfAbsent} after loading has completed; if another value was associated with
   * {@code key} while the new value was loading then a removal notification will be sent for the
   * new value.
   *
   * <p><b>Warning:</b> this method silently converts checked exceptions to unchecked exceptions,
   * and should not be used with cache loaders which throw checked exceptions. In such cases use
   * {@link #get} instead.
   *