code: def testTempFolder(self):
      temp_folder = os.path.join(
          os.environ["TEST_TMPDIR"], "test_temp_folder"
      )
      lab = deepmind_lab.Lab(
          "contributed/dmlab30/explore_goal_locations_small",
          [],
          {},
          temp_folder=temp_folder,
      )
      lab.reset()
      self.assertGreaterEqual(len(os.listdir(temp_folder)), 1)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  from absl.testing import absltest
  import numpy
  import six
  import deepmind_lab
label_desc: Use image node_id 3 for calling the DeepMindLabTest obj's underlying member method code with example usage: obj.testTempFolder() without return types