A question about EMA using in sampler.py

[xinyangATK]

I found there Is a difference about EMA between Sampler and Sampler_mol function in sampler.py
There isn't a row self.ema.copy_to(self.model.parameters()) in def Sampler_mol(object), but def Sampler(object) does.
Does this mean that there is no need for EMA while sampling molecules?

Thanks.