findAllByPhoneCode static method
Find all countries by phone code.
Supports inputs with and without '+' prefix.
Implementation
static List<Country> findAllByPhoneCode(String phoneCode) {
final normalized = _normalizePhoneCode(phoneCode);
if (normalized.isEmpty) return const [];
final countries = _countriesByPhoneCodeAll[normalized];
if (countries == null) return const [];
return List<Country>.unmodifiable(countries);
}