old_contents: from collections import namedtuple
  
  ServerInfo = namedtuple('ServerInfo', ['password', 'players', 'max_players', 'hostname', 'gamemode', 'language'])
  
new_contents: from __future__ import absolute_import, unicode_literals
  from collections import namedtuple
  
  ServerInfo = namedtuple('ServerInfo', ['password', 'players', 'max_players', 'hostname', 'gamemode', 'language'])
  Rule = namedtuple('Rule', ['name', 'value'])
  Client = namedtuple('Client', ['name', 'score'])
  ClientDetail = namedtuple('ClientDetail', ['id', 'name', 'score', 'ping'])
  
subject: Define models for rule and client responses