/**
* Sets the response status code to not modified and removes illegal headers
* for such a response code
* @return null
*/
public function setNotModified()
{
$this->setStatusCode(self::STATUS_CODE_NOT_MODIFIED);
$this->setView(null);
$removeHeaders = array(Header::HEADER_ALLOW, Header::HEADER_CONTENT_ENCODING, Header::HEADER_CONTENT_LANGUAGE, Header::HEADER_CONTENT_LENGTH, Header::HEADER_CONTENT_MD5, Header::HEADER_CONTENT_TYPE, Header::HEADER_LAST_MODIFIED);
$this->headers->removeHeader($removeHeaders);
}
