code: def get(self, timeout: int = 0):
      if not self._queue:
          raise Empty()
      return self._queue.pop(0)
  
imports: import subprocess
  import sys
  from queue import Empty
  from typing import Any, List, Optional, Tuple
  from packaging.version import Version
  from lightning.app.core import LightningFlow, LightningWork
  from lightning.app.core.queues import BaseQueue
  from lightning.app.utilities.imports import _CLOUD_TEST_RUN, _is_lightning_flash_available, _is_pytorch_lightning_available
label_desc: Use image node_id 3 for calling the _MockQueue obj's underlying member method code with example usage: obj.get(timeout) and returns: self