docs: def _GetServiceKey():
    """Returns the service key."""
    global _service_key
  
    if _service_key is None:
      hive = getattr(winreg, config.CONFIG["Client.config_hive"])
      path = config.CONFIG["Client.config_key"]
  
      # Don't use winreg.KEY_WOW64_64KEY since it breaks on Windows 2000
      _service_key = winreg.CreateKeyEx(hive, path, 0, winreg.KEY_ALL_ACCESS)
  
    return _service_key