@Override
    public ScalePolicyVO findById(final String id) {
        return ScalePolicyVO.buildScalePolicyVO(scalePolicyMapper.selectByPrimaryKey(id));
    }
find scale policy by id.

@param id primary key
@return {@linkplain ScalePolicyVO}
shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/ScalePolicyServiceImpl.java