initialize method
Implementation
Future<void> initialize() async {
await Future.wait([
_loadData('assets/protobuf/countries.pb', (bytes) {
if (_countries == null) {
_countries = Countries.fromBuffer(bytes);
}
}),
_loadData('assets/protobuf/states.pb', (bytes) {
if (_states == null) {
_states = States.fromBuffer(bytes);
}
}),
_loadData('assets/protobuf/cities.pb', (bytes) {
if (_cities == null) {
_cities = Cities.fromBuffer(bytes);
}
}),
]);
}