code: def replaced(self, new_nodes):
      return CaffeGraph(nodes=new_nodes, name=self.name)
  
imports: from collections import namedtuple
  from functools import reduce
  from google.protobuf import text_format
  from copy import deepcopy
  import numbers
  import os
  import tempfile
  from mmdnn.conversion.caffe.mapper import get_handler_name
  from mmdnn.conversion.caffe.resolver import get_caffe_resolver, has_pycaffe
  from mmdnn.conversion.caffe.shape import *
  from mmdnn.conversion.caffe.errors import print_stderr, ConversionError
label_desc: Use image node_id 8 for calling the CaffeGraph obj's underlying member method code with example usage: obj.replaced(new_nodes) and returns: CaffeGraph