code: def __attrs_post_init__(self):
      if self.session is None:
          self.session = Session()
  
imports: import logging
  from abc import ABC, abstractmethod
  from os import environ
  import attr
  from ..backend_api import Session
  from ..backend_api.session.defs import ENV_AUTH_TOKEN
label_desc: Use image node_id 1 for calling the CloudDriver obj's underlying member method code with example usage: obj.__attrs_post_init__() without return types