NullHandler.php

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<?php

declare(strict_types=1);

namespace ILIAS\MetaData\Copyright\Identifiers;

class NullHandler implements HandlerInterface
{
    public function buildIdentifierFromEntryID(int $entry_id): string
    {
        return '';
    }

    public function isIdentifierValid(string $identifier): bool
    {
        return false;
    }

    public function parseEntryIDFromIdentifier(string $identifier): int
    {
        return 0;
    }
}