{* ../../docs_src/dataclasses/tutorial001.py hl[1,7:12,19:20] *}

Isso ainda é suportado graças ao **Pydantic**, pois ele tem <a href="https://docs.pydantic.dev/latest/concepts/dataclasses/#use-of-stdlib-dataclasses-with-basemodel" class="external-link" target="_blank">suporte interno para `dataclasses`</a>.

/**
 * SMB1 Logoff AndX request message.
 *
 * This command is used to terminate a user session that was
 * previously established with a Session Setup AndX command.
 */
public class SmbComLogoffAndX extends AndXServerMessageBlock {

    /**
     * Creates a new SMB1 logoff request to end a user session.
     *
     * @param config the CIFS configuration
     * @param andx the next command in the AndX chain, or null

        // SMB_COM_LOGOFF_ANDX = 0x74
        assertEquals((byte) 0x74, msg.command, "Command should be SMB_COM_LOGOFF_ANDX");
    }

    @Test
    @DisplayName("constructor with mock andx properly sets andx field")
    void constructorWithMockAndx() {
        // Create a mock ServerMessageBlock
        ServerMessageBlock mockAndx = mock(ServerMessageBlock.class);

    private String nativeFileSystem = "";

    /**
     * Constructs a tree connect AndX response.
     *
     * @param config the configuration to use
     * @param andx the next command in the AndX chain, or null
     */
    public SmbComTreeConnectAndXResponse(final Configuration config, final ServerMessageBlock andx) {
        super(config, andx);
    }

    /**
     * @return the service
     */
    @Override

/**
 * SMB1 Read AndX request message.
 *
 * This command is used to read data from a file that has been
 * previously opened with an Open command.
 */
public class SmbComReadAndX extends AndXServerMessageBlock {

    private long offset;
    private int fid;
    int openTimeout;
    int maxCount, minCount, remaining;

    /**
     * Constructs a Read AndX request.
     *

     * @param len the number of bytes to write
     * @param andx the next command in the AndX chain, or null
     */
    public SmbComWriteAndX(final Configuration config, final int fid, final long offset, final int remaining, final byte[] b, final int off,
            final int len, final ServerMessageBlock andx) {
        super(config, SMB_COM_WRITE_ANDX, andx);
        this.fid = fid;
        this.offset = offset;

/**
 * SMB1 Read AndX Response message.
 *
 * This response contains the data that was read from the file
 * along with information about the read operation.
 */
public class SmbComReadAndXResponse extends AndXServerMessageBlock {

    private byte[] data;
    private int offset, dataCompactionMode, dataLength, dataOffset;

    /**
     * Constructs a Read AndX response.
     *

/// tip | Dica

Mas ainda é recomendado usar as ideias acima, usando várias classes, em vez desses parâmetros.

Isso ocorre porque o Schema JSON gerado no OpenAPI do seu aplicativo (e a documentação) ainda será o único para o modelo completo, mesmo que você use `response_model_include` ou `response_model_exclude` para omitir alguns atributos.

    /**
     * Constructs an Open AndX request.
     *
     * @param config the configuration
     * @param fileName the name of the file to open
     * @param access the desired access mode
     * @param shareAccess the share access mode
     * @param flags the open flags
     * @param fileAttributes the file attributes
     * @param andx the next command in the chain
     */

///

## Ordene os parâmetros de acordo com sua necessidade

Suponha que você queira declarar o parâmetro de consulta `q` como uma `str` obrigatória.

E você não precisa declarar mais nada em relação a este parâmetro, então você não precisa necessariamente usar `Query`.

Mas você ainda precisa usar `Path` para o parâmetro de rota `item_id`.