code: def convert(model_path):
      device = C.cpu()
      model = C.Function.load(model_path, device=device)
  
      # Replace all python proposal layer user-functions with native proposal layer
      # user functions.
      return clone_with_native_proposal_layer(model)
  
imports: import os, sys, argparse, copy
  import cntk
  from cntk import ops
label_desc: Use image node_id 2 for calling a global function with example usage: convert(model_path) and returns: clone_with_native_proposal_layer