class_docstr: An empty predictor that does nothing.
class_docstr_tok: ["An","empty","predictor","that","does","nothing","."]
code: def update_fn(self, x, t, *args):
      return x, x
  
file_path: espnet/espnet2/enh/diffusion/sampling/predictors.py
imports: import abc
  import numpy
  import torch
label_desc: Use image node_id 2 for calling the NonePredictor obj's underlying member method code with example usage: obj.update_fn(x, t) and returns: x,  x