purchaseWithPlanVendorId method Null safety
Implementation
static Future<Map<dynamic, dynamic>> purchaseWithPlanVendorId(String vendorId,
[String? contentId]) async {
final Map<dynamic, dynamic> product = await _channel.invokeMethod(
'purchaseWithPlanVendorId',
<String, dynamic>{'vendorId': vendorId, 'contentId': contentId});
return product;
}