72     protected static $date = [  variable in dokuwiki\\plugin\\struct\\meta\\DateFormatConverter
127         $date = $strftime;
131             $datekeys = array_keys(self::$date);
143             $date = preg_replace($from, $to, $date);
148             $date = str_replace(
151                 $date
155         return $date;
161      * @param string $date
164     public static function toStrftime($date)  argument
169             $from = array_keys(self::$date);
174             $to = array_values(self::$date);
181             $strftime = preg_replace($from, $to, $date);
186             $datekeys = array_keys(self::$date);