public function postEventTrigger($event, $time, $time_unit, $zephyr) {
        $data = [ ];
        $data['time'] = $time;
        $data['time_unit'] = $time_unit;
        $data['event'] = $event;
        $data['zephyr'] = $zephyr;

        $result = $this->apiPost('trigger', $data);
        return $result;
    }