code: def test_get_timestamped_export_dir(self):
      export_dir_base = tempfile.mkdtemp() + "export/"
      export_dir_1 = export_utils.get_timestamped_export_dir(
          export_dir_base
      )
      time.sleep(2)
      export_dir_2 = export_utils.get_timestamped_export_dir(
          export_dir_base
      )
      time.sleep(2)
      export_dir_3 = export_utils.get_timestamped_export_dir(
          export_dir_base
      )
  
      # Export directories should be named using a timestamp that is seconds
      # since epoch.  Such a timestamp is 10 digits long.
      time_1 = os.path.basename(export_dir_1)
      self.assertEqual(10, len(time_1))
      time_2 = os.path.basename(export_dir_2)
      self.assertEqual(10, len(time_2))
      time_3 = os.path.basename(export_dir_3)
      self.assertEqual(10, len(time_3))
  
      self.assertLess(int(time_1), int(time_2))
      self.assertLess(int(time_2), int(time_3))
  
imports: import os
  import tempfile
  import time
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import test
  from tensorflow.python.saved_model import signature_constants
  from tensorflow.python.saved_model import signature_def_utils
  from tensorflow.python.saved_model.model_utils import export_output
  from tensorflow.python.saved_model.model_utils import export_utils
  from tensorflow.python.saved_model.model_utils.mode_keys import KerasModeKeys
label_desc: Use image node_id 5 for calling the ExportTest obj's underlying member method code with example usage: obj.test_get_timestamped_export_dir() without return types