NullBaseElement.php

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<?php

declare(strict_types=1);

namespace ILIAS\MetaData\Elements\Base;

use ILIAS\MetaData\Elements\NoID;
use ILIAS\MetaData\Structure\Definitions\DefinitionInterface;
use ILIAS\MetaData\Structure\Definitions\NullDefinition;

class NullBaseElement implements BaseElementInterface
{
    public function getMDID(): int|NoID
    {
        return 0;
    }

    public function getDefinition(): DefinitionInterface
    {
        return new NullDefinition();
    }

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

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

    public function isRoot(): bool
    {
        return false;
    }
}