create empty method updateEtasForSystemIfTTL

src/repositories/ApiBasedRepository.ts

@@ -45,6 +45,10 @@ export class ApiBasedRepository implements GetterRepository {
     return [];
   }
 
+  public async updateEtasForSystemIfTTL(systemId: string) {
+
+  }
+
   // TODO: migrate rest of logic over to this class
   public async getOrderedStopByRouteAndStopId(routeId: string, stopId: string): Promise<| null> {
     return null;