code: def _skip_layer(self, _):
      pass
  
file_path: chainercv/examples/ssd/caffe2npz.py
imports: import argparse
  import numpy
  import re
  from chainer import Link
  import chainer.links.caffe.caffe_function
  from chainer import serializers
  from chainercv.links.model.ssd import Normalize
label_desc: Use image node_id 4 for calling the SSDCaffeFunction obj's underlying member method code with example usage: obj._skip_layer(_) without return types