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1 | <?php |
2 | |
3 | namespace TonyBogdanov\Memoize; |
4 | |
5 | /** |
6 | * Class Marker |
7 | * |
8 | * @package TonyBogdanov\Memoize |
9 | */ |
10 | final class VoidMarker { |
11 | |
12 | /** @var VoidMarker */ |
13 | private static VoidMarker $reference; |
14 | |
15 | /** |
16 | * @return VoidMarker |
17 | */ |
18 | public static function get(): VoidMarker { |
19 | if ( ! isset( self::$reference ) ) { |
20 | self::$reference = new self(); |
21 | } |
22 | |
23 | return self::$reference; |
24 | } |
25 | |
26 | } |