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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 | } |