code: def testWorksWithFSPath(self):
      checkpoint_dir = (
          pathlib.Path(self.get_temp_dir()) / "one_checkpoint_found"
      )
      if not gfile.Exists(checkpoint_dir):
          gfile.MakeDirs(checkpoint_dir)
  
      save_path = checkpoint_dir / "model.ckpt"
  
      a = resource_variable_ops.ResourceVariable(5)
      self.evaluate(a.initializer)
      checkpoint = trackable_utils.Checkpoint(a=a)
      checkpoint.save(file_prefix=save_path)
  
      num_found = 0
      for _ in checkpoint_utils.checkpoints_iterator(
          checkpoint_dir, timeout=0
      ):
          num_found += 1
      self.assertEqual(num_found, 1)
  
imports: import os
  import pathlib
  import time
  import numpy
  from tensorflow.core.protobuf import config_pb2
  from tensorflow.python.checkpoint import checkpoint
  from tensorflow.python.client import session
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import init_ops
  from tensorflow.python.ops import partitioned_variables
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.ops import variable_scope
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import gfile
  from tensorflow.python.platform import test
  from tensorflow.python.training import checkpoint_utils
  from tensorflow.python.training import saver
label_desc: Use image node_id 3 for calling the CheckpointIteratorTest obj's underlying member method code with example usage: obj.testWorksWithFSPath() without return types