```JSON
{"item_id":3}
```

/// check | Revisa

Observa que el valor que recibió (y devolvió) tu función es `3`, como un Python `int`, y no un string `"3"`.

Entonces, con esa declaración de tipos **FastAPI** te da <abbr title="convertir el string que viene de un HTTP request a datos de Python">"parsing"</abbr> automático del request.

///

## Validación de datos

			// Fetch the redirect location if any.
			if u := getRedirectLocation(r); u != nil {
				// Employ a temporary re-direct.
				http.Redirect(w, r, u.String(), http.StatusTemporaryRedirect)
				return
			}
		}
		h.ServeHTTP(w, r)
	})
}

var redirectPrefixes = map[string]struct{}{
	"favicon-16x16.png": {},
	"favicon-32x32.png": {},
	"favicon-96x96.png": {},
	"index.html":        {},
	minioReservedBucket: {},

                        .total(pager.getAllRecordCount()).status(ApiResult.Status.OK).result());
    }

    // GET /api/admin/relatedquery/setting/{id}
    @Execute
    public JsonResponse<ApiResult> get$setting(final String id) {
        return asJson(new ApiConfigResponse().setting(relatedQueryService.getRelatedQuery(id).map(this::createEditBody).orElseGet(() -> {

  /**
   * By default delegates to {@link Object#toString}. The dynamic proxies' {@code toString()} will
   * delegate to this method. Subclasses can override this method to provide custom string
   * representation for the proxies.
   */
  @Override
  public String toString() {
    return super.toString();
  }

  private static boolean isProxyOfSameInterfaces(Object arg, Class<?> proxyClass) {
    return proxyClass.isInstance(arg)

  override fun configureTlsExtensions(
    sslSocket: SSLSocket,
    hostname: String?,
    protocols: List<Protocol>,
  ) {
    getDelegate(sslSocket)?.configureTlsExtensions(sslSocket, hostname, protocols)
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? {
    return getDelegate(sslSocket)?.getSelectedProtocol(sslSocket)
  }

  /** Constructs a {@code VerifyException} with no message. */
  public VerifyException() {}

  /** Constructs a {@code VerifyException} with the message {@code message}. */
  public VerifyException(@CheckForNull String message) {
    super(message);
  }

  /**
   * Constructs a {@code VerifyException} with the cause {@code cause} and a message that is {@code
   * null} if {@code cause} is null, and {@code cause.toString()} otherwise.

// Minor - minor dev id
// Devname - device name
type Info struct {
	Total      uint64
	Free       uint64
	Used       uint64
	Files      uint64
	Ffree      uint64
	FSType     string
	Major      uint32
	Minor      uint32
	Name       string
	Rotational *bool
	NRRequests uint64
}

// IOStats contains stats of a single drive
type IOStats struct {
	ReadIOs        uint64
	ReadMerges     uint64
	ReadSectors    uint64

        } else {
            addrEntry[addrIndex] = null;
        }

        return 6;
    }
    public String toString() {
        return new String( "NameQueryResponse[" +
            super.toString() +
            ",addrEntry=" + addrEntry + "]" );
    }

        super("ECL0054", asArray(createMessage(cause)), cause);
    }

    /**
     * メッセージを作成します。
     *
     * @param cause
     *            原因
     * @return メッセージ
     */
    protected static String createMessage(final SAXException cause) {
        final StringBuilder buf = new StringBuilder(100);
        buf.append(cause);
        if (cause instanceof SAXParseException) {

            synchronized( in.lock ) {
                in.receive( buffer, bufferIndex, len );
                in.lock.notify();
            }
        }
        return len;
    }
    public String toString() {
        return new String( "TransCallNamedPipeResponse[" + super.toString() + "]" );
    }