code: def testWaitForLockToDisappear_DownloadOngoing(self):
      module_dir = os.path.join(self.get_temp_dir(), "module")
      task_uid = uuid.uuid4().hex
      lock_filename = resolver._lock_filename(module_dir)
      lock_file_content = resolver._lock_file_contents(task_uid)
      tf_utils.atomic_write_string_to_file(
          lock_filename, lock_file_content, overwrite=False
      )
  
      lock_expiration_wait_time_secs = 10
      thread = threading.Thread(
          target=resolver._wait_for_lock_to_disappear,
          args=(
              "module",
              lock_filename,
              lock_expiration_wait_time_secs,
          ),
      )
      thread.start()
      # Simulate download by writing a file every 1 sec. While writes are happing
      # the lock file remains in place.
      tmp_dir = resolver._temp_download_dir(
          self.get_temp_dir(), task_uid
      )
      tf.compat.v1.gfile.MakeDirs(tmp_dir)
      for x in range(2 * lock_expiration_wait_time_secs):
          tf_utils.atomic_write_string_to_file(
              os.path.join(tmp_dir, "file_%d" % x),
              "test",
              overwrite=False,
          )
          # While writes are happening the original lock file is in place.
          self.assertEqual(
              lock_file_content,
              tf_utils.read_file_to_string(lock_filename),
          )
          time.sleep(1)
      thread.join(lock_expiration_wait_time_secs)
  
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 7 for calling the CompressedResolverTest obj's underlying member method code with example usage: obj.testWaitForLockToDisappear_DownloadOngoing() without return types