code: private void deleteApplicationCFs(ApplicationDefinition appDef) {
          Tenant tenant = Tenant.getTenant(appDef);
          for (TableDefinition tableDef : appDef.getTableDefinitions().values()) {
              DBService.instance(tenant).deleteStoreIfPresent(objectsStoreName(tableDef));
              DBService.instance(tenant).deleteStoreIfPresent(termsStoreName(tableDef));
          }
      }
docs: actually exist in case a previous delete-app failed.