public function getFrequencyDescription(): string
    {
        $data = $this->attributes["Recurrence"];
        if ($data === "ONCE") {
            return "Once";
        }
        if ($data === "DAILY") {
            return "Daily";
        }
        if ($data === "WEEKDAYS") {
            return "Weekdays";
        }
        if ($data === "WEEKENDS") {
            return "Weekends";
        }

        $data = $this->getFrequency();
        $days = [
            AlarmInterface::MONDAY    =>  "Mon",
            AlarmInterface::TUESDAY   =>  "Tues",
            AlarmInterface::WEDNESDAY =>  "Wed",
            AlarmInterface::THURSDAY  =>  "Thurs",
            AlarmInterface::FRIDAY    =>  "Fri",
            AlarmInterface::SATURDAY  =>  "Sat",
            AlarmInterface::SUNDAY    =>  "Sun",
        ];
        $description = "";
        foreach ($days as $key => $val) {
            if ($data & $key) {
                if (strlen($description) > 0) {
                    $description .= ",";
                }
                $description .= $val;
            }
        }
        return $description;
    }