Based on the doc (https://developer.paypal.com/docs/api/reference/country-codes/), I just found for China mainland the country code is `C2` not 'CN'. So it does not follow the "ISO 3166-1 alpha-2" format. I want to know whether only China has such differences or including other countries? Is there a js lib to to convert the Paypalformat country code to ISO 3166 format?
