code: def get_network_for_imagenet(arch_name):
      model = DumpModel(arch_name)
      input_image = np.ones((1, 3, 224, 224), dtype=np.float32)
      input = chainer.Variable(input_image)
      return model, input
  
file_path: chainer/examples/caffe_export/export.py
imports: import argparse
  import os
  import numpy
  import chainer
  from chainer.exporters import caffe
  from chainer.links.model.vision import googlenet
  from chainer.links.model.vision import resnet
  from chainer.links.model.vision import vgg
label_desc: Use image node_id 1 for calling a global function with example usage: get_network_for_imagenet(arch_name) and returns: model,  input