public static PlantStatusManagementService GetInstance(PlantService plantService, RuleService ruleService)
 {
     return(_instance ?? (_instance = new PlantStatusManagementService(plantService, ruleService)));
 }
 private PlantStatusManagementService(PlantService plantService, RuleService ruleService)
 {
     _plantService = plantService;
     _ruleService  = ruleService;
 }