new_contents: #! /usr/bin/env python
  # -*- coding: utf-8 -*-
  # vim:fenc=utf-8
  #
  # Copyright © 2020 damian <damian@damian-desktop>
  #
  # Distributed under terms of the MIT license.
  
  from typing import NewType
  
  UserId = NewType('UserId', int)
  
  some_id1 = UserId(524313)
  print(f"someId1: {some_id1}")
  
  #typing is not strong, it's only suggestion, so we still can pass 'string'
  some_id2 = UserId("aaa")
  print(f"someId2: {some_id2}")
  
  
  
subject: test typing NewType feature