public VisualizationDataController(IVisualizationDataService visualizationDataService)
 {
     _visualizationDataService = visualizationDataService;
 }
 public NotifyAndUpdateService(IVisualizationDataService visualizationDataService, IMergeAndClusterService mergeAndClusterService)
 {
     _visualizationDataService = visualizationDataService;
     _mergeAndClusterService   = mergeAndClusterService;
 }