class QiuTokenDto { String? uploadUrl; String? upToken; String? fileKey; String? domain; QiuTokenDto({this.uploadUrl, this.upToken, this.fileKey, this.domain}); Map toJson() { final map = {}; map["upload_url"] = uploadUrl; map["up_token"] = upToken; map["file_key"] = fileKey; map["domain"] = domain; return map; } QiuTokenDto.fromJson(dynamic json) { uploadUrl = json["upload_url"] ?? ""; upToken = json["up_token"] ?? ""; fileKey = json["file_key"] ?? ""; domain = json["domain"] ?? ""; } }