code: def _do_refresh_token(self, old_token, exp=None):
      pass
  
imports: import sys
  from abc import ABCMeta, abstractmethod
  from time import time
  import jwt
  from jwt.algorithms import get_default_algorithms
  import six
label_desc: Use image node_id 15 for calling the TokenManager obj's underlying member method code with example usage: obj._do_refresh_token(old_token, exp) without return types