code: public static boolean isSystemTable(String storeName) {
          return storeName.equals(SchemaService.APPS_STORE_NAME) ||
                 storeName.equals(TaskManagerService.TASKS_STORE_NAME) ||
                 storeName.equals(TenantService.TENANTS_STORE_NAME);
      }
docs: Return true if the given store name is a system table, aka metadata table. System
  tables store column values as strings. All other tables use binary column values.
  
  @param   storeName   Store name to test.
  @return              True if the store name is a system table.