'This command is used to schedule downtime for a particular
service.
During the specified downtime, Nagios will not send
notifications out about the service.
Syntax: SCHEDULE_SVC_DOWNTIME;<host_name>;<service_description>
<start_time>;<end_time>;<fixed>;<trigger_id>;<duration>;<author>;
<comment>'

def schedule_svc_downtime(self, host, services=None, minutes=30):

    cmd = 'SCHEDULE_SVC_DOWNTIME'
    if (services is None):
        services = []
    for service in services:
        dt_cmd_str = self._fmt_dt_str(cmd, host, minutes, svc=service)
        self._write_command(dt_cmd_str)
