class_docstr: Quantizer defined in:
  Quantization and Training of Neural Networks for Efficient Integer-Arithmetic-Only Inference
  http://openaccess.thecvf.com/content_cvpr_2018/papers/Jacob_Quantization_and_Training_CVPR_2018_paper.pdf
code: def fold_bn(self, config, **kwargs):
      # TODO simulate folded weight
      pass
  
imports: import logging
  import copy
  import torch
  from schema import Schema, And, Or, Optional
  from ..utils.config_validation import CompressorSchema
  from ..compressor import Quantizer, QuantGrad, QuantType
label_desc: Use image node_id 7 for calling the QAT_Quantizer obj's underlying member method code with example usage: obj.fold_bn(config) without return types