initProd method
Implementation
@override
Future<String?> initProd(String appId, String clientId, String privatePem,
String publicPem) async {
final result = await methodChannel.invokeMethod<String>('passInit', {
"app_id": appId,
"client_id": clientId,
"private_pem": privatePem,
"public_pem": publicPem,
});
return "$result";
}