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;
    }
}