class ChattingApiResult extends Object{ Uesr user; String token; int time; String message; int sendId; int receiveId; String content; ChattingApiResult(this.user, this.token, this.time, this.message, this.sendId, this.receiveId, this.content); @override String toString() { return 'ChattingApiResult{token: $token, time: $time, message: $message, sendId: $sendId, receiveId: $receiveId, content: $content}'; } } class Uesr{ int id ; String photo; String username; String telephone; Uesr(this.id, this.photo, this.username, this.telephone); @override String toString() { return 'Uesr{id: $id, photo: $photo, username: $username, telephone: $telephone}'; } }