The value returned by radioBrowser.listCountries() is not easy to use

[ChildProdigy]

This is the format returned by this API "key = value"
Papua New Guinea = 1
Cambodia = 2
Paraguay = 50
Kazakhstan = 51

But most of your APIs require ISO 3166-1 country code.
For example:
China -> CN
List stations = rb.listStationsBy(Paging.at(0, 10), SearchMode.BYCOUNTRYCODEEXACT, "CN");

After checking, the official should provide the ISO 3166-1 country code directly.
https://de1.api.radio-browser.info/#List_of_countries

[sfuhrm]

Thanks for the issue. The HTTP-API changed a bit, all plaintext country fields are deprecated and replaced by countrycode which is ISO 3166-1. I didn't check the library according to this change, especially the listCountries() call.

Thinking about your issue, I see the improvement to add another call called listCountryCodes() which would suit to the new nomenclature of the HTTP API, and deprecate the listCountries() call.

[sfuhrm]

Fixed in master according to the description above.