toJson method
Implementation
@override
Map<String, dynamic> toJson() => <String, dynamic>{
'chat_id': chatId,
'message_id': messageId,
'marked_as_done_task_ids': markedAsDoneTaskIds.map((item) => item).toList(),
'marked_as_not_done_task_ids': markedAsNotDoneTaskIds
.map((item) => item)
.toList(),
'@type': constructor,
};