code: def __reduce__(self):
      from .context import get_spawning_popen
  
      if get_spawning_popen() is None:
          raise TypeError(
              "Pickling an AuthenticationString object is "
              "disallowed for security reasons"
          )
      return AuthenticationString, (bytes(self),)
  
imports: import os
  import sys
  import signal
  import itertools
  import threading
  from _weakrefset import WeakSet
label_desc: Use image node_id 1 for calling the AuthenticationString obj's underlying member method code with example usage: obj.__reduce__() and returns: AuthenticationString,  bytes