code: def change_svc_check_timeperiod(self, service, check_timeperiod):
          
          service.modified_attributes |= DICT_MODATTR["MODATTR_CHECK_TIMEPERIOD"].value
          service.check_period = check_timeperiod
          self.send_an_element(service.get_update_status_brok())
docs: Modify service check timeperiod
          Format of the line that triggers function call::
  
          CHANGE_SVC_CHECK_TIMEPERIOD;<host_name>;<service_description>;<check_timeperiod>
  
          :param service: service to modify check timeperiod
          :type service: alignak.objects.service.Service
          :param check_timeperiod: timeperiod object
          :type check_timeperiod: alignak.objects.timeperiod.Timeperiod
          :return: None