class_docstr: A class that tracks a list of trackable objects.
class_docstr_tok: ["A","class","that","tracks","a","list","of","trackable","objects","."]
code: def trackable_objects(self) -> List[base.Trackable]:
      return self._trackable_objects
  
file_path: transform/tensorflow_transform/annotators.py
imports: import contextlib
  import os
  from typing import Callable, List, Optional
  import tensorflow
  from tensorflow_transform.graph_context import TFGraphContext
  from tensorflow_transform.keras_lib import tf_keras
  from tensorflow.python.trackable import base
label_desc: Use image node_id 2 for calling the ObjectTracker obj's underlying member method code with example usage: obj.trackable_objects() and returns: self