ringDesignNullableListFromJson function
        
List<RingDesign> ?
ringDesignNullableListFromJson(
    
    
- List? ringDesign, [
- List<RingDesign> ? defaultValue
Implementation
List<enums.RingDesign>? ringDesignNullableListFromJson(
  List? ringDesign, [
  List<enums.RingDesign>? defaultValue,
]) {
  if (ringDesign == null) {
    return defaultValue;
  }
  return ringDesign.map((e) => ringDesignFromJson(e.toString())).toList();
}