NullData.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\MetaData\Elements\Data;
 
use ILIAS\MetaData\Vocabularies\Slots\Identifier as SlotIdentifier;
use ILIAS\MetaData\Vocabularies\Slots\Identifier;
 
class NullData implements DataInterface
{
    public function type(): Type
    {
        return Type::NULL;
    }
 
    public function value(): string
    {
        return '';
    }
 
    public function vocabularySlot(): SlotIdentifier
    {
        return SlotIdentifier::NULL;
    }
}