restorePurchases static method
Restores a user's previous purchases and links their appUserIDs to any user's also using those purchases.
Returns a CustomerInfo
object, or throws a PlatformException if there
was a problem restoring transactions.
Implementation
static Future<CustomerInfo> restorePurchases() async {
final result = await _channel.invokeMethod('restorePurchases');
return CustomerInfo.fromJson(Map<String, dynamic>.from(result));
}