encode method
Implementation
@override
Uint8List encode() {
final buffer = ByteDataWriter(endian: Endian.little);
// Escreve o comando COM_STMT_CLOSE (0x19)
buffer.writeUint8(0x19);
// Escreve o statement ID (4 bytes, little-endian)
buffer.writeUint32(stmtID, Endian.little);
return buffer.toBytes();
}