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<?php
namespace Equip\ValueObject;
use function Assert\that;
class Identifier
{
/**
* @var int|null
*/
private $id;
* @param int|null $id
* @param boolean $is_required
public function __construct($id, $is_required = true)
$assert = that($id);
if (!$is_required) {
$assert->nullOr();
}
$assert->integer()->greaterThan(0);
$this->id = $id;
* @return int|null
public function value()
return $this->id;
equip /
vo
