code: protected function parseResponse($response, $statusCode)
      {
          $previous = null;
  
          if ($this->transaction === null) {
              $this->transaction = new Transaction();
          }
  
          try {
              $this->transaction->jsonUnserialize($response);
          } catch (InvalidArgumentException $e) {
              $previous = $e;
          }
  
          if ((int)$statusCode >= 400) {
              throw new RedeException(
                  $this->transaction->getReturnMessage(),
                  $this->transaction->getReturnCode(),
                  $previous
              );
          }
  
          return $this->transaction;
      }
docs: @param string $response
  @param string $statusCode
  
  @return Transaction
  @see    AbstractService::parseResponse()
  @throws \Rede\Exception\RedeException
  @throws \InvalidArgumentException
  @throws \Exception