code: def sess(self, hook, ckpt_dir):
      with tf.train.MonitoredTrainingSession(
          checkpoint_dir=ckpt_dir,
          save_checkpoint_secs=0,
          save_summaries_steps=10,
          hooks=[hook],
      ) as sess:
          self._sess = sess
          yield sess
  
file_path: tensor2tensor/tensor2tensor/utils/metrics_hook_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import contextlib
  import os
  import shutil
  from tensor2tensor.utils import metrics_hook
  import tensorflow.compat.v1
label_desc: Use image node_id 3 for calling the MetricsHookTest obj's underlying member method code with example usage: obj.sess(hook, ckpt_dir) without return types