src/Peach/DT/Datetime.php
private function getMinuteAdjuster()
    {
        static $adjuster = null;
        if ($adjuster === null) {
            $adjuster = new FieldAdjuster(self::$MINUTE, self::$HOUR, 0, 59);
        }
        return $adjuster;
    }
private function getMinuteAdjuster()
    {
        static $adjuster = null;
        if ($adjuster === null) {
            $adjuster = new FieldAdjuster(self::$MINUTE, self::$HOUR, 0, 59);
        }
        return $adjuster;
    }
「分」フィールドを調整する Adjuster です
@return FieldAdjuster
@codeCoverageIgnore