docs: final public void Null() throws ParseException {
                       /*@bgen(jjtree) Null */
    AstNull jjtn000 = new AstNull(JJTNULL);
    boolean jjtc000 = true;
    jjtree.openNodeScope(jjtn000);
      try {
        jj_consume_token(NULL);
      } finally {
        if (jjtc000) {
          jjtree.closeNodeScope(jjtn000, true);
        }
      }
    }