`score_corrector` / `modify_score` : I can't find example of these functions

[hyoseok1223]

Hi, I wonder how to apply score correction at the code.

stable-diffusion/ldm/models/diffusion/ddim.py

Line 182 in 21f890f

e_t = score_corrector.modify_score(self.model, e_t, x, t, c, **corrector_kwargs)

I can't find any examples and codes.
Could you give me some help for understanding how to apply score correction?