PayWithAmazon\Client::cancelOrderReference PHP Method

    public function cancelOrderReference($requestParameters = array())
    {
        $parameters = array();
        $parameters['Action'] = 'CancelOrderReference';
        $requestParameters = array_change_key_case($requestParameters, CASE_LOWER);
        $fieldMappings = array('merchant_id' => 'SellerId', 'amazon_order_reference_id' => 'AmazonOrderReferenceId', 'cancelation_reason' => 'CancelationReason', 'mws_auth_token' => 'MWSAuthToken');
        $responseObject = $this->setParametersAndPost($parameters, $fieldMappings, $requestParameters);
        return $responseObject;
    }