/**
* @param integer $date Article publication date in unixtimestamp format
*/
public function set_publication_date($date)
{
$this->_attributes['publication_date'] = \Baseapp\Library\Sitemap::date_format($date);
return $this;
}
/**
* The date of last modification of the file.
* @param integer $lastmod Unix timestamp
*/
public function set_last_mod($lastmod)
{
$this->attributes['lastmod'] = \Baseapp\Library\Sitemap::date_format($lastmod);
return $this;
}