code: public String delete(final Object obj) {
      final PersistMeta meta = EntityUtil.getMeta(obj.getClass());
      return new SQL() {
        {
          DELETE_FROM(getTableName(meta, obj));
          WHERE("id=#{id}");
        }
      }.toString();
    }
docs: 按照id查找并删除某个对象
  
  @param obj
  @return