code: def quantization_setup(calib_method="histogram"):
      """Change network into quantized version "automatically" and selects histogram as default quantization method"""
      select_default_calib_method(calib_method)
      initialize()
  
file_path: DALI/docs/examples/use_cases/pytorch/efficientnet/image_classification/quantization.py
imports: from tqdm import tqdm
  import torch
  import contextlib
  import time
  import logging
  from pytorch_quantization import quant_modules
  from pytorch_quantization import nn
  from pytorch_quantization import calib
  from pytorch_quantization.tensor_quant import QuantDescriptor
  from .None import logger
  from .utils import calc_ips
  import dllogger
label_desc: Use image node_id 2 for calling a global function with example usage: quantization_setup(calib_method) without return types