code: def pprint(self, file=sys.stdout):
      file.write("Added files   : %s\n" % self.added_files)
      file.write("Removed files : %s\n" % self.removed_files)
      file.write("Modified files: %s\n" % self.modified_files)
      file.write("Touched files : %s\n" % self.touched_files)
  
imports: import os
  import os.path
  import stat
  import sys
label_desc: Use image node_id 4 for calling the TreeDifference obj's underlying member method code with example usage: obj.pprint(file) without return types