/**
* [getValidation description]
* @param Request $request
* @return [type]
*/
protected function getValidation(Request $request)
{
$client = $this;
$curl = new Curl();
$curl->success(function ($instance) use($client) {
$client->response = new Crawler();
$client->response->addXmlContent($instance->response);
});
$curl->error(function ($instance) {
throw new CasCurlException(sprintf('Code #%s: %s', $instance->error_code, $instance->error_message));
});
$curl->get($this->getValidationUrl($request));
}
