/**
* Sends request to recommendation server and returns recommendations on success or null on error
* @return Response|null
*/
public function execute()
{
$httpClient = $this->getHttpClient();
$httpRequest = $httpClient->post('/eps/crosssell/recommendations/' . $this->config->getAccountId() . '.do');
$headers = $httpRequest->getHeaders();
$httpRequest->addHeader('Content-Type', 'application/x-www-form-urlencoded; charset=utf-8');
$httpRequest->addHeader('User-Agent', 'Econda PHP SDK');
$httpRequest->addPostFields($this->getHttpPostFields());
$httpResponse = $httpRequest->send();
if ($httpResponse->isSuccessful()) {
$responseData = $httpResponse->json();
$this->response = $this->getResponseFromHttpResponse($responseData);
}
$this->lastHttpRequest = $httpRequest;
return $this->response;
}
