/**
  * Send a POST request to the specified URL with the specified payload.
  * @param string $url
  * @param string $data
  * @return string Remote data
  **/
 public function sendPOST($url, $data = array())
 {
     $data['_fake_status'] = '200';
     // Send the actual request.
     $this->instance->setHeader('User-Agent', sprintf(Imgur::$user_agent, Imgur::$key));
     $this->instance->setMethod('POST');
     $this->instance->setUrl($url);
     foreach ($data as $k => $v) {
         $this->instance->addPostParameter($k, $v);
     }
     try {
         /** @var HTTP_Request2_Response */
         $response = $this->instance->send();
         return $response->getBody();
     } catch (HTTP_Request2_Exception $e) {
         throw new Imgur_Exception("HTTP Request Failure", null, $e);
     } catch (Exception $e) {
         throw new Imgur_Exception("Unknown Failure during HTTP Request", null, $e);
     }
 }