NullStructureElement.php

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<?php

declare(strict_types=1);

namespace ILIAS\MetaData\Elements\Structure;

use ILIAS\MetaData\Elements\Base\NullBaseElement;
use ILIAS\MetaData\Elements\NoID;
use ILIAS\MetaData\Structure\Definitions\DefinitionInterface;
use ILIAS\MetaData\Elements\Base\BaseElementInterface;

class NullStructureElement extends NullBaseElement implements StructureElementInterface
{
    public function getMDID(): NoID
    {
        return NoID::STRUCTURE;
    }

    public function getSuperElement(): ?StructureElement
    {
        return null;
    }

    public function getSubElements(): \Generator
    {
        yield from [];
    }

    public function getSubElement(string $name): ?StructureElementInterface
    {
        return null;
    }
}