protected function buildRequest(AccessToken $accessToken, $requestBody)
 {
     $request = $this->client->createRequest('POST', $this->baseUrl . '/v1/payments/payment', array('Accept' => 'application/json', 'Accept-Language' => 'en_US', 'Authorization' => $accessToken->getTokenType() . ' ' . $accessToken->getAccessToken(), 'Content-Type' => 'application/json'), $requestBody, array('debug' => $this->debug));
     return $request;
 }