EC2SecurityGroup group = new EC2SecurityGroup();
group.setAccount( user[0] );
group.setName( name[0] );
perm.addUser( group );
EC2request.addIpPermission( perm );
// -> execute the request
RevokeSecurityGroupIngressResponse EC2response = EC2SoapServiceImpl.toRevokeSecurityGroupIngressResponse(
ServiceProvider.getInstance().getEC2Engine().revokeSecurityGroup( EC2request ));
serializeResponse(response, EC2response);