message: only test pathlib on python v>3.6
diff: @@ -73,6 +73,7 @@ class TestSaveModel(test.TestCase, parameterized.TestCase):
  @test_util.run_v2_only
  def test_save_format_defaults_pathlib(self):
  + if sys.version_info >= (3, 6):
  path = pathlib.Path(self.get_temp_dir()) / 'model_path'
  save.save_model(self.model, path)
  self.assert_saved_model(path)
  