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Windows NT KAMIDAKI 10.0 build 19045 (Windows 10) AMD64
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Name	Size	Permission	Date
Exception	[ DIR ]	drwxrwxrwx	2024-07-26 17:41
AbstractEnum.php	6.76 KB	-rw-rw-rw-	2023-02-07 22:26
EnumMap.php	10.96 KB	-rw-rw-rw-	2023-02-07 22:26
NullValue.php	1.09 KB	-rw-rw-rw-	2023-02-07 22:26

Rename

<?php
declare(strict_types = 1);

namespace DASPRiD\Enum;

use DASPRiD\Enum\Exception\CloneNotSupportedException;
use DASPRiD\Enum\Exception\SerializeNotSupportedException;
use DASPRiD\Enum\Exception\UnserializeNotSupportedException;

final class NullValue
{
    /**
     * @var self
     */
    private static $instance;

private function __construct()
    {
    }

public static function instance() : self
    {
        return self::$instance ?: self::$instance = new self();
    }

/**
     * Forbid cloning enums.
     *
     * @throws CloneNotSupportedException
     */
    final public function __clone()
    {
        throw new CloneNotSupportedException();
    }

/**
     * Forbid serializing enums.
     *
     * @throws SerializeNotSupportedException
     */
    final public function __sleep() : array
    {
        throw new SerializeNotSupportedException();
    }

/**
     * Forbid unserializing enums.
     *
     * @throws UnserializeNotSupportedException
     */
    final public function __wakeup() : void
    {
        throw new UnserializeNotSupportedException();
    }
}