NavigatorInterface.php

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<?php

declare(strict_types=1);

namespace ILIAS\MetaData\Paths\Navigator;

use ILIAS\MetaData\Elements\ElementInterface;

interface NavigatorInterface extends BaseNavigatorInterface
{
    public function nextStep(): ?NavigatorInterface;

    public function previousStep(): ?NavigatorInterface;

    public function elementsAtFinalStep(): \Generator;

    public function lastElementAtFinalStep(): ?ElementInterface;

    public function elements(): \Generator;

    public function lastElement(): ?ElementInterface;
}