code: def testModuleConcurrentDownload(self):
      module_dir = os.path.join(self.get_temp_dir(), "module")
  
      # To simulate one downloading starting while the other is still in progress,
      # call resolver.atomic_download() from download_fn(). The second download
      # is set up with download_fn() that fails. That download_fn() is not
      # expected to be called.
      def second_download_fn(handle, tmp_dir):
          del handle, tmp_dir
          self.fail(
              "This should not be called. The module should have been "
              "downloaded already."
          )
  
      second_download_thread = threading.Thread(
          target=resolver.atomic_download,
          args=(
              "module",
              second_download_fn,
              module_dir,
          ),
      )
  
      def first_download_fn(handle, tmp_dir):
          del handle, tmp_dir
          tf.compat.v1.gfile.MakeDirs(module_dir)
          tf_utils.atomic_write_string_to_file(
              os.path.join(module_dir, "file"), "content", False
          )
          second_download_thread.start()
  
      self.assertEqual(
          module_dir,
          resolver.atomic_download(
              "module", first_download_fn, module_dir
          ),
      )
      second_download_thread.join(30)
  
imports: import os
  import re
  import socket
  import tempfile
  import threading
  import time
  import unittest
  from unittest import mock
  import uuid
  from absl import flags
  import tensorflow
  import tensorflow_hub
  from tensorflow_hub import compressed_module_resolver
  from tensorflow_hub import config
  from tensorflow_hub import registry
  from tensorflow_hub import resolver
  from tensorflow_hub import test_utils
  from tensorflow_hub import tf_utils
  from tensorflow_hub import uncompressed_module_resolver
label_desc: Use image node_id 11 for calling the CompressedResolverTest obj's underlying member method code with example usage: obj.testModuleConcurrentDownload() without return types