toJson method
Implementation
@override
Map<String, dynamic> toJson() => <String, dynamic>{
'message_id': messageId,
'sender_id': senderId?.toJson(),
'date': date,
'text': text?.toJson(),
'paid_message_star_count': paidMessageStarCount,
'is_from_owner': isFromOwner,
'can_be_deleted': canBeDeleted,
'@type': constructor,
};