code: def disable_contactgroup_svc_notifications(self, contactgroup):
          
          for contact_id in contactgroup.get_contacts():
              self.disable_contact_svc_notifications(self.daemon.contacts[contact_id])
docs: Disable service notifications for a contactgroup
          Format of the line that triggers function call::
  
          DISABLE_CONTACTGROUP_SVC_NOTIFICATIONS;<contactgroup_name>
  
          :param contactgroup: contactgroup to disable
          :type contactgroup: alignak.objects.contactgroup.Contactgroup
          :return: None