Elgg\Notifications\NotificationsService::getDeprecatedNotificationSubject PHP Method

    protected function getDeprecatedNotificationSubject($type, $subtype)
    {
        if ($type == '') {
            $type = '__BLANK__';
        }
        if ($subtype == '') {
            $subtype = '__BLANK__';
        }
        if (!isset($this->deprSubjects[$type])) {
            return '';
        }
        if (!isset($this->deprSubjects[$type][$subtype])) {
            return '';
        }
        return $this->deprSubjects[$type][$subtype];
    }