UI.ViewModel.RoomViewModel.AddSystemMessage C# (CSharp) Метод

        public void AddSystemMessage(string message)
        {
            AddMessage(new MessageViewModel(message, this));
        }

 private void SetRoomAdmin(object obj)
 {
     try
     {
         ClientModel.Api.Perform(new ClientSetRoomAdminAction(_parent.Name, _userId));
     }
     catch (SocketException se)
     {
         _parent.AddSystemMessage(se.Message);
     }
 }