code: def _parse_key(key: str):
      return key
  
imports: import threading
  import time
  from typing import Dict
  from typing import Union
  import numpy
  from ..app import AppTracker, Packet, AppTrackDataSource
  from ..app.url import AppUrlResponseHandler
label_desc: Use image node_id 2 for calling the Writer obj's underlying member method code with example usage: obj._parse_key(key) and returns: key