private void OnDeserializeViewModelState() { var filePath = FileManagerHelper.GetFileNameToOpen(); if (String.IsNullOrWhiteSpace(filePath)) { return; } _viewModelStateSerializer.LoadViewModelState(this, filePath); // updating event aggregator in loaded configuration for enabling event tracking TestConfiguration.UpdateConfiguration(ref _configuration, _eventAggregator); _eventAggregator.GetEvent <CameraPositionChangedEvent>().Unsubscribe(_cameraSubscriptionToken); _eventAggregator.GetEvent <CameraPositionChangedEvent>().Publish(Configuration.Camera); _cameraSubscriptionToken = _eventAggregator.GetEvent <CameraPositionChangedEvent>().Subscribe(OnCameraChange); if (State == TestState.TestIsFinished) { _models.ExecuteWithoutNotification(models => models.ForEach(model => model.ApplyFinalVisualState())); RaisePropertyChanged(() => Models3D); } }