code: def track_tensor_variables():
      tensor_variables = []
      with TensorVariableCallbacks.instance(
          tensor_variables.append
      ):  # pylint: disable=not-callable
          yield tensor_variables
  
imports: import collections
  import functools
  import itertools
  import threading
  import contextlib
  from sonnet.src.functional import utils
  import tensorflow
label_desc: Use image node_id 10 for calling a global function with example usage: track_tensor_variables() without return types