class_docstr: Base class for utilities to load variables to a (existing) session. 
class_docstr_tok: ["Base","class","for","utilities","to","load","variables","to","a","(","existing",")","session","."]
code: def _setup_graph(self):
      pass
  
imports: import os
  import numpy
  import six
  from ..compat import tfv1
  from ..utils import logger
  from .common import get_op_tensor_name
  from .varmanip import SessionUpdate, get_checkpoint_path, get_savename_from_varname, is_training_name
label_desc: Use image node_id 2 for calling the SessionInit obj's underlying member method code with example usage: obj._setup_graph() without return types