/**
 * Confirm Product Instance Action Sample
 * The ConfirmProductInstance operation returns true if the specified product code
 * is attached to the specified instance. The operation returns false if the
 * product code is not attached to the instance.
 * The ConfirmProductInstance operation can only be executed by the owner of the
 * AMI. This feature is useful when an AMI owner is providing support and wants to
 * verify whether a user's instance is eligible.
 *   
 * @param Amazon_EC2_Interface $service instance of Amazon_EC2_Interface
 * @param mixed $request Amazon_EC2_Model_ConfirmProductInstance or array of parameters
 */
function invokeConfirmProductInstance(Amazon_EC2_Interface $service, $request)
{
    try {
        $response = $service->confirmProductInstance($request);
        echo "Service Response\n";
        echo "=============================================================================\n";
        echo "        ConfirmProductInstanceResponse\n";
        if ($response->isSetResponseMetadata()) {
            echo "            ResponseMetadata\n";
            $responseMetadata = $response->getResponseMetadata();
            if ($responseMetadata->isSetRequestId()) {
                echo "                RequestId\n";
                echo "                    " . $responseMetadata->getRequestId() . "\n";
            }
        }
        if ($response->isSetConfirmProductInstanceResult()) {
            echo "            ConfirmProductInstanceResult\n";
            $confirmProductInstanceResult = $response->getConfirmProductInstanceResult();
            if ($confirmProductInstanceResult->isSetOwnerId()) {
                echo "                OwnerId\n";
                echo "                    " . $confirmProductInstanceResult->getOwnerId() . "\n";
            }
        }
    } catch (Amazon_EC2_Exception $ex) {
        echo "Caught Exception: " . $ex->getMessage() . "\n";
        echo "Response Status Code: " . $ex->getStatusCode() . "\n";
        echo "Error Code: " . $ex->getErrorCode() . "\n";
        echo "Error Type: " . $ex->getErrorType() . "\n";
        echo "Request ID: " . $ex->getRequestId() . "\n";
        echo "XML: " . $ex->getXML() . "\n";
    }
}