code: def _deserializer(obj: dict) -> "TestDiskQueue.Obj":
      return TestDiskQueue.Obj(obj["num"], obj["txt"])
  
imports: import json
  import random
  import threading
  import unittest
  from glob import glob
  from pathlib import Path
  from tempfile import TemporaryDirectory
  from typing import Optional
  from unittest.mock import patch
  from neptune.internal.disk_queue import DiskQueue, QueueElement
label_desc: Use image node_id 9 for calling the TestDiskQueue obj's underlying member method code with example usage: obj._deserializer(obj) and returns: TestDiskQueue