<?php

namespace PSX\Model\SchemaOrg;

/**
 * @Description("An list item, e.g. a step in a checklist or how-to description.")
 */
class ListItem extends Intangible implements \JsonSerializable
{
    /** @var int|string|null */
    protected $position;

    /** @var ListItem|null */
    protected $previousItem;

    /** @var Thing|null */
    protected $item;

    /** @var ListItem|null */
    protected $nextItem;

    /**
     * @param int|string|null $position
     */
    public function setPosition($position): void
    {
        $this->position = $position;
    }

    /**
     * @return int|string|null
     */
    public function getPosition()
    {
        return $this->position;
    }

    /**
     * @param ListItem|null $previousItem
     */
    public function setPreviousItem(?ListItem $previousItem): void
    {
        $this->previousItem = $previousItem;
    }

    /**
     * @return ListItem|null
     */
    public function getPreviousItem(): ?ListItem
    {
        return $this->previousItem;
    }

    /**
     * @param Thing|null $item
     */
    public function setItem(?Thing $item): void
    {
        $this->item = $item;
    }

    /**
     * @return Thing|null
     */
    public function getItem(): ?Thing
    {
        return $this->item;
    }

    /**
     * @param ListItem|null $nextItem
     */
    public function setNextItem(?ListItem $nextItem): void
    {
        $this->nextItem = $nextItem;
    }

    /**
     * @return ListItem|null
     */
    public function getNextItem(): ?ListItem
    {
        return $this->nextItem;
    }

    public function jsonSerialize()
    {
        return (object) array_merge((array) parent::jsonSerialize(), array_filter(array('position' => $this->position, 'previousItem' => $this->previousItem, 'item' => $this->item, 'nextItem' => $this->nextItem), static function ($value) : bool {
            return $value !== null;
        }));
    }
}
__halt_compiler();----SIGNATURE:----A93jGZAcwNY/PCLEYP9D1mus6k9D3C7DRP31j5H9EUCyKgiYBB3NG3mmrL4lFD8wCIz2EQiJ8BfQa2KqZyP+CDXu13FR6vHDbc6is5mTjVJGJL9RYYhymfLLkEli+1HYrZykOJoIWaE/2P2P1nYjK5sPbT0hvBP8F6yBAjc9B9cjWJAowo3OQqpf0oNCCwDtKsYA425IgO7dFSPamnK0gJ/SWwiTh6F5o7Wuhba1gj28JTRNyAeSHAlniLccYxDyGYpiVM3+ekwaUgSRLk0gjb7JDm2YdWETz6FO1UNidGdCkQLE0p42fqa7TalwPDEoZq3YIaLz43XxB15xlwmdxmcqQ/TDag52+jSf7I6GlsRSDok9/zEQ7FG9u5fe5ZhluLPNJfUH6G5apgHaBc0g8D3gzzJh6ooMCvmJ3sggPRPs5V1THy/+GyDeDT4AJLo/PSQG0zwOC4bcHj0HICX7uYvmBpyEJK7xGDPD/wg8aqcewthQS22+Xihj64FuYnrvmmxWuU7i/yiNo2sktbIbdM25qEpkLBqpEM2F3+FenDI/pgcAghOevqPCurByJGXlohB3DZGUAbkNkJXTEL6aKqNDLTg+fQeLz74YffNiELl+//HrX/2eh2ci2zSiQyAxnDRf+cmBsv1Vz3nNn6Zt1iJp+Pk9FghHUL+64BQj9/A=----ATTACHMENT:----NjQ5ODY1MTY4MTU0OTAzOCA2OTkyOTYwODAyNjQ5NTM2IDIwMDU5NTI4NTU4MTE2NDQ=