<?php

namespace PSX\Model\SchemaOrg;

/**
 * @Description("A WebSite is a set of related web pages and other items typically served from a single web domain and accessible via URLs.")
 */
class WebSite extends CreativeWork implements \JsonSerializable
{
    /** @var string|null */
    protected $issn;

    /**
     * @param string|null $issn
     */
    public function setIssn(?string $issn): void
    {
        $this->issn = $issn;
    }

    /**
     * @return string|null
     */
    public function getIssn(): ?string
    {
        return $this->issn;
    }

    public function jsonSerialize()
    {
        return (object) array_merge((array) parent::jsonSerialize(), array_filter(array('issn' => $this->issn), static function ($value) : bool {
            return $value !== null;
        }));
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----ODAxOTgxODM0Mzg2NTUwOCA3MjI3ODQyNjEyODM1NTE0IDYyMzIxNTI3MzE2NjYxNzk=