code: def __init__(self, tf_callback, rank=None):
      super(Callback, self).__init__()
      self.tf_callback = tf_callback
      self.rank = rank
  
imports: import os
  import logging
  import shutil
  import tensorflow
  from bigdl.orca.learn.utils import get_replaced_path
  from bigdl.orca.data.file import put_local_files_with_prefix_to_remote, put_local_dir_tree_to_remote, put_local_file_to_remote
label_desc: Use image node_id 1 to create a new Callback object from inherited base classes: tf.keras.callbacks with example: obj = Callback(tf_callback, rank)