The ModelSearchService class is responsible for generate a TextImage and navigate to the corresponding ModelItem in the workflow designer.
 private void OnModelSearchServiceAvailable(ModelSearchService modelSearchService)
 {
     this.modelSearchService = (ModelSearchServiceImpl)modelSearchService;
 }
 void OnModelSearchServiceAvailable(ModelSearchService modelSearchService)
 {
     if (modelSearchService != null)
     {
         this.modelSearchService = modelSearchService as ModelSearchServiceImpl;
     }
 }