/**
* Gets the date as an RFC 822 string. IETF RFC 2822 supercedes RFC 822 and its definition
* can be found at the IETF Web site.
*
* @param boolean $local True to return the date string in the local time zone, false to return it in GMT.
*
* @return string The date string in RFC 822 format.
*
* @link http://www.ietf.org/rfc/rfc2822.txt
* @since 1.7.0
*/
public function toRFC822($local = false)
{
return $this->format(\DateTimeInterface::RFC2822, $local, false);
}