return
	}

	// Ensure body content type is opaque to ensure that request body has not
	// been interpreted as form data.
	contentType := r.Header.Get("Content-Type")
	if contentType != "application/octet-stream" {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrBadRequest), r.URL)
		return
	}

	// Validate operation

    }

    /**
     * Encrypt a message using the session's encryption context
     *
     * @param message the message to encrypt
     * @return encrypted message with transform header
     * @throws CIFSException if encryption fails or is not enabled
     */
    public byte[] encryptMessage(byte[] message) throws CIFSException {
        if (this.encryptionContext == null) {

// has been used.
// The returned reader contains the payload.
func waitForHTTPResponse(respBody io.Reader) (io.Reader, error) {
	reader := bufio.NewReader(respBody)
	for {
		b, err := reader.ReadByte()
		if err != nil {
			return nil, err
		}
		// Check if we have a response ready or a filler byte.
		switch b {
		case 0:
			return reader, nil
		case 1:
			errorText, err := io.ReadAll(reader)

			newSetCounts[ss] = struct{}{}
		}
	}

	setCounts = []uint64{}
	for setCount := range newSetCounts {
		setCounts = append(setCounts, setCount)
	}

	// Not necessarily needed but it ensures to the readers
	// eyes that we prefer a sorted setCount slice for the
	// subsequent function to figure out the right common
	// divisor, it avoids loops.
	slices.Sort(setCounts)

	return setCounts
}

		// not a storage error.
		return nil
	}
	readers := make([]*metacacheReader, len(disks))
	defer func() {
		for _, r := range readers {
			r.Close()
		}
	}()
	for i := range disks {
		r, w := io.Pipe()
		// Make sure we close the pipe so blocked writes doesn't stay around.
		defer r.CloseWithError(context.Canceled)

		readers[i] = newMetacacheReader(r)
		d := disks[i]

			if fi.InlineData() {
				// If written with header we are fine.
				return fi, nil
			}
			if fi.Size == 0 || (fi.VersionID == "" || fi.VersionID == nullVersionID) {
				// If versioned we have no conflicts.
				fi.SetInlineData()
				return fi, nil
			}

			// For overwritten objects without header we might have a
			// conflict with data written later. Check the data path

                if not is_body_allowed_for_status_code(response.status_code):
                    response.body = b""
                response.headers.raw.extend(solved_result.response.headers.raw)
        if errors:
            validation_error = RequestValidationError(
                errors, body=body, endpoint_ctx=endpoint_ctx
            )
            raise validation_error

    public static final String ERRORS_front_suffix = "{errors.front_suffix}";

    /** The key of the message: <ul class="has-error"> */
    public static final String ERRORS_HEADER = "{errors.header}";

    /** The key of the message: </ul> */
    public static final String ERRORS_FOOTER = "{errors.footer}";

    /** The key of the message: <li><i class="fa fa-exclamation-circle"></i> */

/// tip | Tipp

Hier verwenden wir `Query()`, weil dies ein **Query-Parameter** ist. Später werden wir andere wie `Path()`, `Body()`, `Header()`, und `Cookie()` sehen, die auch dieselben Argumente wie `Query()` akzeptieren.

///

FastAPI wird nun:

* Die Daten **validieren**, um sicherzustellen, dass die Länge maximal 50 Zeichen beträgt

/// tip | Dica

Aqui estamos usando `Query()` porque este é um **parâmetro de consulta**. Mais adiante veremos outros como `Path()`, `Body()`, `Header()` e `Cookie()`, que também aceitam os mesmos argumentos que `Query()`.

///

Agora o FastAPI vai:

* **Validar** os dados garantindo que o comprimento máximo seja de 50 caracteres