sendCommandBin method
Sends the given commend to the printer. @param message command to send.
Implementation
Future<bool> sendCommandBin(Uint8List data) async {
var params = {
"printerId": _printerId,
"printInfo": _printerInfo.toMap(),
"data": data
};
final bool success =
await _channel.invokeMethod("typeB-sendCommandBin", params);
return success;
}