/**
* Creates a new message by reading from a file containing a complete mail
* message. The headers are parsed and stored; the body is left intact.
*
* \param $filename
* The filename of the file to read
*
* \return
* A new AnewtMailMessage instance
*/
public static function from_file($filename)
{
assert('is_string($filename)');
$data = file_get_contents($filename);
$message = AnewtMailMessage::from_string($data);
return $message;
}
