toMap method
Implementation
Map<String, String>? toMap() {
if (this == null) return null;
final address = this!;
final map = {
_klabel: address.label,
_kstreet: address.street,
_kcity: address.city,
_kpostcode: address.postcode,
_kregion: address.region,
_kcountry: address.country
}.valuesNotNull();
/// There will always be a type field, so make sure there's at least one more
return map.length <= 1 ? null : map;
}