toJson method
Implementation
@override
Map<String, dynamic> toJson() => <String, dynamic>{
'chat_list': chatList?.toJson(),
'query': query,
'offset': offset,
'limit': limit,
'filter': filter?.toJson(),
'chat_type_filter': chatTypeFilter?.toJson(),
'min_date': minDate,
'max_date': maxDate,
'@type': constructor,
};