def raise_enter_downtime_log_entry(self):
        """Raise HOST DOWNTIME ALERT entry (critical level)
        Format is : "HOST DOWNTIME ALERT: *get_name()*;STARTED;
                    Host has entered a period of scheduled downtime"
        Example : "HOST DOWNTIME ALERT: test_host_0;STARTED;
                   Host has entered a period of scheduled downtime"

        :return: None
        """
        if not self.__class__.log_downtimes:
            return

        brok = make_monitoring_log(
            'info', "HOST DOWNTIME ALERT: %s;STARTED; "
                    "Host has entered a period of scheduled downtime" % (self.get_name())
        )
        self.broks.append(brok)
Raise HOST DOWNTIME ALERT entry (critical level)
        Format is : "HOST DOWNTIME ALERT: *get_name()*;STARTED;
                    Host has entered a period of scheduled downtime"
        Example : "HOST DOWNTIME ALERT: test_host_0;STARTED;
                   Host has entered a period of scheduled downtime"

        :return: None