toJson method Null safety
Implementation
Map<String, dynamic> toJson() => {
'volume': volume,
'chapter': chapter,
'title': title,
'translatedLanguage': translatedLanguage,
'hash': hash,
'data': chapterData,
'dataSaver': chapterDataSaver,
'publishAt': publishAt,
'createdAt': createdAt,
'updatedAt': updatedAt,
'version': version,
};