code: private void initializeDefaultTenant() {
          DBService dbService = DBService.instance();
          dbService.createNamespace();
          dbService.createStoreIfAbsent(SchemaService.APPS_STORE_NAME, false);
          dbService.createStoreIfAbsent(TaskManagerService.TASKS_STORE_NAME, false);
          dbService.createStoreIfAbsent(TENANTS_STORE_NAME, false);
          storeInitialDefaultTenantDef();
      }
docs: Ensure that the default tenant and its required metadata tables exist.