The uses the photoevaporation driven evolution model of Owen & Wu (2013,2017) to predict the minimum masses of planets in multi-planet systems to be consistent with the photoevaporation model.
The planetary system requires both a planet above and below the radius gap to be useful for this test.
There is an example jupyter notebook for the Kepler-36 system.
The paper on this code can be read here: https://academic.oup.com/mnras/article/491/4/5287/5663631