class BriefingFeed { final int id; final String title; final String url; final String? category; const BriefingFeed({ required this.id, required this.title, required this.url, this.category, }); factory BriefingFeed.fromJson(Map json) => BriefingFeed( id: json['id'] as int, title: json['title'] as String? ?? '', url: json['url'] as String? ?? '', category: json['category'] as String?, ); }