code: protected void arrangePreparedAccessContext(ActionRuntime runtime) { // called by callback
          final AccessContextResource resource = createAccessContextResource(runtime);
          final AccessContext accessContext = accessContextArranger.arrangePreparedAccessContext(resource);
          PreparedAccessContext.setAccessContextOnThread(accessContext);
      }
docs: Arrange prepared access context for DBFlute, which is used for common columns setup. <br>
  This is called by callback process so you should NOT call this directly in your action.
  @param runtime The runtime meta of action execute. (NotNull)