code: def _file_reduce(self):
      import pickle
  
      raise pickle.PicklingError(
          "Cannot pickle a ZoneInfo file created from a file stream."
      )
  
imports: import bisect
  import calendar
  import collections
  import functools
  import re
  import weakref
  from datetime import datetime, timedelta, tzinfo
  from .None import _common, _tzpath
label_desc: Use image node_id 17 for calling the ZoneInfo obj's underlying member method code with example usage: obj._file_reduce() without return types