f = response.fid;
        }

        return f;
    }
    void open( int flags, int access, int attrs, int options ) throws SmbException {
        if( isOpen() ) {
            return;
        }
        fid = open0( flags, access, attrs, options );
        opened = true;
        tree_num = tree.tree_num;
    }
    boolean isOpen() {

     */
    _attributes(line) {
        let attrs = '';
        for (let prop in line) {
            // Custom add class
            if (prop === 'class') {
                attrs += ` class=${line[prop]} `
                continue
            }
            if (prop === 'type') {
                attrs += `${this.pfx}="${line[prop]}" `
            } else if (prop !== 'value') {

            final Attr attr = (Attr) attrs.item(i);
            buf.append(' ');
            appendAttr(attr, buf);
        }
    }

    /**
     * {@link Attr}の文字列表現を追加します。
     *
     * @param attr
     *            属性。{@literal null}であってはいけません
     * @param buf
     *            文字列バッファ。{@literal null}であってはいけません
     */
    public static void appendAttr(final Attr attr, final StringBuilder buf) {

    - 🧰 [SQLModel](https://sqlmodel.tiangolo.com) para las interacciones con la base de datos SQL en Python (ORM).
    - 🔍 [Pydantic](https://docs.pydantic.dev), utilizado por FastAPI, para la validación de datos y la gestión de configuraciones.
    - 💾 [PostgreSQL](https://www.postgresql.org) como la base de datos SQL.
- 🚀 [React](https://react.dev) para el frontend.

## Casos de uso

Por ejemplo, imagina que quieres retornar un HTTP status code de "OK" `200` por defecto.

Pero si los datos no existen, quieres crearlos y retornar un HTTP status code de "CREATED" `201`.

Pero aún quieres poder filtrar y convertir los datos que retornas con un `response_model`.

Para esos casos, puedes usar un parámetro `Response`.

## Usar un parámetro `Response`

            try {
                int attrs = f.getAttributes() ^ SmbConstants.ATTR_ARCHIVE ^ SmbConstants.ATTR_HIDDEN ^ SmbConstants.ATTR_READONLY;
                if ( Boolean.parseBoolean(getProperties().getOrDefault("test.skip.hidden", "false")) ) {
                    attrs &= ~SmbConstants.ATTR_HIDDEN;
                }
                f.setAttributes(attrs);
                assertEquals(attrs, f.getAttributes());
            }

     * bitset by bitwise ORing the <tt>ATTR_*</tt> constants. Setting the
     * value returned by <tt>getAttributes</tt> will result in both files
     * having the same attributes.
     * 
     * @param attrs
     *            attribute flags
     * 
     * @throws CIFSException
     */
    void setAttributes ( int attrs ) throws CIFSException;


    /**

		formats: FormatPAX | FormatGNU,
	}, {
		header:  &Header{Xattrs: nil},
		formats: FormatUSTAR | FormatPAX | FormatGNU,
	}, {
		header:  &Header{Xattrs: map[string]string{"foo": "bar"}},
		paxHdrs: map[string]string{paxSchilyXattr + "foo": "bar"},
		formats: FormatPAX,
	}, {
		header:  &Header{Xattrs: map[string]string{"foo": "bar"}, Format: FormatGNU},

      // specific and they can't be read as bytes using the read methods anyway.
      if (attrs.isDirectory() || attrs.isSymbolicLink()) {
        return Optional.absent();
      }

      return Optional.of(attrs.size());
    }

    @Override
    public long size() throws IOException {
      BasicFileAttributes attrs = readAttributes();

      // specific and they can't be read as bytes using the read methods anyway.
      if (attrs.isDirectory() || attrs.isSymbolicLink()) {
        return Optional.absent();
      }

      return Optional.of(attrs.size());
    }

    @Override
    public long size() throws IOException {
      BasicFileAttributes attrs = readAttributes();