code: def get_domain_listing(self, domain, sort='hot', period=None, *args,
                             **kwargs):
          
          # Verify arguments
          if sort not in ('controversial', 'hot', 'new', 'rising', 'top',
                          'gilded'):
              raise TypeError('Invalid sort parameter.')
          if period not in (None, 'all', 'day', 'hour', 'month', 'week', 'year'):
              raise TypeError('Invalid period parameter.')
          if sort not in ('controversial', 'top') and period:
              raise TypeError('Period cannot be set for that sort argument.')
  
          url = self.config['domain'].format(domain=domain)
          if sort != 'hot':
              url += sort
          if period:  # Set or overwrite params 't' parameter
              kwargs.setdefault('params', {})['t'] = period
          return self.get_content(url, *args, **kwargs)
docs: Return a get_content generator for submissions by domain.
  
          Corresponds to the submissions provided by
          ``https://www.reddit.com/domain/{domain}``.
  
          :param domain: The domain to generate a submission listing for.
          :param sort: When provided must be one of 'hot', 'new', 'rising',
              'controversial, 'gilded', or 'top'. Defaults to 'hot'.
          :param period: When sort is either 'controversial', or 'top' the period
              can be either None (for account default), 'all', 'year', 'month',
              'week', 'day', or 'hour'.
  
          The additional parameters are passed directly into
          :meth:`.get_content`. Note: the `url` parameter cannot be altered.