class ChatMessage {
  String? idFrom;
  String? idTo;
  String? content;
  int? type;
  DateTime? timestamp;

  ChatMessage({
    this.idFrom,
    this.idTo,
    this.content,
    this.type,
    this.timestamp,
  });

  ChatMessage.fromJson(Map<dynamic, dynamic> json)
      : idFrom = json['idFrom'],
        idTo = json['idTo'],
        content = json['content'],
        type = json['type'],
        timestamp = json['timestamp'];
}