code: def snapshot_is_done(path):
      return os.path.exists(
          _pywrap_snapshot_utils.TF_DATA_SnapshotDoneFilePath(path)
      )
  
imports: import collections
  import os
  import pathlib
  import time
  from absl.testing import parameterized
  from tensorflow.python.data.experimental.kernel_tests.service import test_base
  from tensorflow.python.data.experimental.ops import distributed_save_op
  from tensorflow.python.data.experimental.service import _pywrap_snapshot_utils
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import errors
  from tensorflow.python.platform import test
label_desc: Use image node_id 4 for calling a global function with example usage: snapshot_is_done(path) and returns: os