old_contents: __author__ = 'Sean'
  
  from system.translations import Translations
  _ = Translations().get()
  
  
  class Channel(object):
  
      name = ""
  
      def __init__(self, name, protocol=None):
          self.name = name
          self.protocol = protocol
  
      def respond(self, message):
          raise NotImplementedError(_("This method must be overridden"))
  
new_contents: from system.translations import Translations
  
  __author__ = 'Sean'
  
  _ = Translations().get()
  
  
  class Channel(object):
  
      name = ""
      users = set()
  
      def __init__(self, name, protocol=None):
          self.name = name
          self.protocol = protocol
          self.users = set()
  
      def respond(self, message):
          raise NotImplementedError(_("This method must be overridden"))
  
subject: Add users set() to base channel objects