toJson method Null safety
Implementation
Map<String, dynamic> toJson() => {
'volume': volume,
'chapter': chapter,
'title': title,
'translatedLanguage': translatedLanguage,
'externalUrl': externalUrl,
'publishAt': publishAt,
'readableAt': readableAt,
'createdAt': createdAt,
'updatedAt': updatedAt,
'pages': pages.toString(),
'version': version.toString(),
};