code: def __init__(self, saver):
      self.saver = saver
      self.init_fn = self.saver.get_scaffold_init_fn()
  
imports: import os
  from concurrent.futures import ThreadPoolExecutor
  import logging
  import sys
  import re
  import joblib
  import numpy
  import tensorflow
  from tensorflow.compat.v1.train import SessionRunHook
  from tensorflow_estimator.python.estimator.early_stopping import _StopOnPredicateHook
  from finetune.errors import FinetuneError
  from finetune.config import get_config
  from finetune.util.metrics import read_eval_metrics
label_desc: Use image node_id 1 to create a new InitializeHook object from inherited base classes: SessionRunHook with example: obj = InitializeHook(saver)