code: public static void beginAccessContext() {
          if (AccessContext.isExistAccessContextOnThread()) { // suspend
              SuspendedAccessContext.setAccessContextOnThread(AccessContext.getAccessContextOnThread());
          }
          AccessContext.setAccessContextOnThread(getAccessContextOnThread());
      }
docs: Begin access-context use for DBFlute. <br>
  You can update entities after calling this.