code: def enable_servicegroup_host_notifications(self, servicegroup):
          
          for service_id in servicegroup.get_services():
              if service_id in self.daemon.services:
                  host_id = self.daemon.services[service_id].host
                  self.enable_host_notifications(self.daemon.hosts[host_id])
docs: Enable host notifications for a servicegroup
          Format of the line that triggers function call::
  
          ENABLE_SERVICEGROUP_HOST_NOTIFICATIONS;<servicegroup_name>
  
          :param servicegroup: servicegroup to enable
          :type servicegroup: alignak.objects.servicegroup.Servicegroup
          :return: None