import 'item.dart'; class ModuleExtend { List? items; ModuleExtend({this.items}); factory ModuleExtend.fromJson(Map json) => ModuleExtend( items: (json['items'] as List?) ?.map((e) => Item.fromJson(e as Map)) .toList(), ); Map toJson() => { 'items': items?.map((e) => e.toJson()).toList(), }; }