import 'paragraph.dart'; class ModuleContent { List? paragraphs; ModuleContent({this.paragraphs}); factory ModuleContent.fromJson(Map json) => ModuleContent( paragraphs: (json['paragraphs'] as List?) ?.map((e) => Paragraph.fromJson(e as Map)) .toList(), ); Map toJson() => { 'paragraphs': paragraphs?.map((e) => e.toJson()).toList(), }; }