replaceText method
Replaces the next replaceable text in a P-touch Template. Text strings are replaced in order of small object number.
Implementation
Future<bool> replaceText(String data) async {
  var params = {
    "printerId": mPrinterId,
    "printInfo": mPrinterInfo.toMap(),
    "data": data
  };
  final bool success = await _channel.invokeMethod("replaceText", params);
  return success;
}