code: def make_UNIX(native):
      # VP: I have no idea now 'native' can be empty here! But it can!
      assert native
  
      return os.path.normpath(native)
  
imports: import os.path
  from utility import to_seq
  from glob import glob
  from b2.util import bjam_signature
label_desc: Use image node_id 3 for calling a global function with example usage: make_UNIX(native) and returns: os