/**
* Access headers collection
*
* Lazy-loads if not already attached.
*
* @return Headers
*/
public function getHeaders()
{
if (null === $this->headers) {
if ($this->mail) {
$part = $this->mail->getRawHeader($this->messageNum);
$this->headers = Headers::fromString($part);
} else {
$this->headers = new Headers();
}
}
return $this->headers;
}
