The generalized Difference-in-Differences being used to deal with staggered implementation of laws in different countries (multiple groups and multiple time periods). And due to the heterogeneous implementation ( explained by Goodman-Bacon, 2018), econometrics emerges some papers to solve the heterogeneous problems like Gardner,2021, Callaway and Sant'Anna (2020).
I am wondering is there any method deal with the problem that the treatment turn off after being turned on?