generateFlagEmojiUnicode static method
Returns a String which will be the unicode of a Flag Emoji,
from a country countryCode
passed as a parameter.
Implementation
static String generateFlagEmojiUnicode(String countryCode) {
final base = 127397;
return countryCode.codeUnits
.map((e) => String.fromCharCode(base + e))
.toList()
.reduce((value, element) => value + element)
.toString();
}