code: def possibly_quantize_sigma(
      self, sigma: torch.Tensor
  ) -> torch.Tensor:
      return sigma
  
file_path: generative-models/sgm/modules/diffusionmodules/denoiser.py
imports: from typing import Dict, Union
  import torch
  import torch.nn
  from ...util import append_dims, instantiate_from_config
  from .denoiser_scaling import DenoiserScaling
  from .discretizer import Discretization
label_desc: Use image node_id 2 for calling the Denoiser obj's underlying member method code with example usage: obj.possibly_quantize_sigma(sigma) and returns: sigma