code: def _restore_snapshot(model, snapshot, load_fn=None):
      if load_fn is None:
          import chainer
  
          load_fn = chainer.serializers.load_npz
  
      load_fn(snapshot, model)
      logging.info("restored from " + str(snapshot))
  
imports: import argparse
  import copy
  import json
  import logging
  import os
  import shutil
  import tempfile
  import numpy
  import torch
label_desc: Use image node_id 2 for calling a global function with example usage: _restore_snapshot(model, snapshot, load_fn) without return types