code: def visualize(ckpt, logdir):
      with tf.Session() as sess:
          tf.train.import_meta_graph(ckpt)
          train_writer = tf.summary.FileWriter(logdir)
          train_writer.add_graph(sess.graph)
          train_writer.close()
  
file_path: MMdnn/mmdnn/conversion/examples/tensorflow/vis_meta.py
imports: import tensorflow
  from tensorflow.python.platform import gfile
  import os
  import os.path
  import shutil
  import sys
  import argparse
label_desc: Use image node_id 2 for calling a global function with example usage: visualize(ckpt, logdir) without return types