if (1 == nCount) {
throw new EC2ServiceException( ClientError.MissingParamter, "Missing required parameter - IpPermissions");
}
// -> execute the request
AuthorizeSecurityGroupIngressResponse EC2response = EC2SoapServiceImpl.toAuthorizeSecurityGroupIngressResponse(
ServiceProvider.getInstance().getEC2Engine().authorizeSecurityGroup( EC2request ));
serializeResponse(response, EC2response);
}