public ServerAgentSimulator(ClientAgentSimulator client)
        {
            this.client = client;

            this.User          = new ServerUser(client.ClientName, "system.server");
            this.User.IsOnline = true;           // change opeartor's status to online
            this.User.PostOffice.Activate(this); // activate post office
        }
 public void Destroy()
 {
     this.client.Dispose();
     this.client = null;
     this.User   = null;
 }