parentCodeOf static method

String? parentCodeOf(
  1. String? code
)

Implementation

static String? parentCodeOf(String? code) {
  switch (codeType(code)) {
    case UCodeType.city:
      return provinceCodeOf(code);
    case UCodeType.province:
      return countryCodeOf(code);
    case UCodeType.country:
    case UCodeType.unknown:
      return null;
  }
}