code: def list_objects(graph_view, skip_slot_variables=False):
      """Traverse the object graph and list all accessible objects."""
      trackable_objects = objects_ids_and_slot_variables_and_paths(
          graph_view, skip_slot_variables
      )[0]
      return trackable_objects
  
file_path: tensorflow-upstream/tensorflow/python/checkpoint/util.py
imports: from tensorflow.core.protobuf import trackable_object_graph_pb2
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.trackable import trackable_utils
  from tensorflow.python.util import object_identity
label_desc: Use image node_id 6 for calling a global function with example usage: list_objects(graph_view, skip_slot_variables) and returns: trackable_objects