signPromotionalOffer static method
Implementation
static Future<Map<dynamic, dynamic>> signPromotionalOffer(
String storeProductId, String storeOfferId) async {
final Map<dynamic, dynamic> result = await _channel.invokeMethod(
'signPromotionalOffer', <String, dynamic>{
'storeProductId': storeProductId,
'storeOfferId': storeOfferId
});
return result;
}