doSignature method
Implementation
@override
Future<String?> doSignature(String data, SamSlot samSlot, String pin, int timeoutMs) async {
final Map<String, dynamic> args = {
'pin': pin,
'data': data,
'samSlot': getSamSlot(samSlot),
'timeoutMs': timeoutMs,
};
final res = await methodChannel.invokeMethod<String>('doSignature', args);
return res;
}