docs: def info(self, domain_id=None, domain=None):
          '''Get information for a specific domain
  
          Specify a domain by either ``domain_id`` or ``domain``, if both are
          specified, then ``domain_id`` is used.
          
          :param str domain_id: Domain ID
          :param str domain: Domain
          :return: Domain object
          '''
          if domain_id != None:
              r = self._api.do_post('Domain.Info', domain_id=domain_id)
          elif domain != None:
              r = self._api.do_post('Domain.Info', domain=domain)
          else:
              raise DNSPodError('Both domain_id and domain are not specificed')
          return Domain(r['domain'])