Services.php

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<?php

declare(strict_types=1);

namespace ILIAS\MetaData\Structure\Services;

use ILIAS\MetaData\Elements\Structure\StructureSetInterface;
use ILIAS\MetaData\Structure\LOMStructureInitiator;
use ILIAS\MetaData\Structure\Definitions\LOMReaderFactory;
use ILIAS\MetaData\Elements\Structure\StructureFactory;

class Services
{
    protected StructureSetInterface $structure;

    public function structure(): StructureSetInterface
    {
        if (isset($this->structure)) {
            return $this->structure;
        }
        return $this->structure = (new LOMStructureInitiator(
            new LOMReaderFactory(),
            new StructureFactory()
        ))->set();
    }
}