https://blog.gongquiz.com/2022/06/06/%ec%a0%81%ec%9d%91%ea%b8%b0%ec%a0%9cadjustment-mechanism%ec%9d%98-%ec%9c%a0%ed%98%95%ec%97%90%ec%84%9c-%eb%8f%99%ec%9d%bc%ed%99%94identificat-%ea%b1%b4%ec%84%a4%ec%95%88%ec%a0%84/