class_docstr: Abstract class of FrozenModel
class_docstr_tok: ["Abstract","class","of","FrozenModel"]
docstr: init_session 
docstr_tok: ["init_session"]
code: def init_session(self, model, gpu_str):
      """init_session"""
      raise NotImplementedError()
  
imports: import os
  import sys
  import abc
  from absl import logging
  import delta.compat
  from delta import utils
label_desc: Use image node_id 1 for calling the ABCFrozenModel obj's underlying member method code with example usage: obj.init_session(model, gpu_str) without return types