/**
* {@inheritDoc}
*/
public function redirectUrl($url = null)
{
if ($url === null) {
return $this->_session->read($this->_config['redirect']);
}
if ($url === false) {
$this->_session->delete($this->_config['redirect']);
return null;
}
$this->_session->write($this->_config['redirect'], $url);
}