MessageForwardInfo.fromJson constructor
Parse from a json
Implementation
factory MessageForwardInfo.fromJson(Map<String, dynamic> json) =>
    MessageForwardInfo(
      origin: MessageForwardOrigin.fromJson(json['origin']),
      date: json['date'],
      publicServiceAnnouncementType: json['public_service_announcement_type'],
      fromChatId: json['from_chat_id'],
      fromMessageId: json['from_message_id'],
    );