public function update(ExchangeRateCollection $collection)
    {
        $request = $this->initApiRequest(
            $this->account->getApiToken(Token::API_EXCHANGE_RATES),
            $this->account->getName(),
            $this->activeDomain
        );
        $request->setPath(ApiRequest::PATH_CURRENCY_EXCHANGE_RATE);
        $response = $request->post($collection);
        return self::checkResponse($request, $response);
    }