Sending a Collection of objects (advanced :-))

[Giggle Giggle]

Hi,
after several hours I've solved the probem how to send a java collection over 
soap ("Wrapper" pattern):

public class CustomerManager {

    private Set<Customer> customers = new HashSet<Customer>();
    
    public Set<Customer> getCustomers() {
        customers.add(new Customer(21, "Paul"));
        customers.add(new Customer(22, "Peter"));
        
        return customers;
    }

Wrapper:
-------------
public class CustomerManagerWrapperSoapBindingImpl implements 
test.CustomerManagerWrapper{
    
    protected CustomerManager cm = new CustomerManager();
    
    public test.Customer[] getCustomers() throws java.rmi.RemoteException {
        return (Customer[]) cm.getCustomers().toArray(new Customer[0]);
    }
}

Well, works fine, but only when the Customer class has only "primitive" 
atributes.
But I want to apply this pattern on Customers which includes another collection 
(I use Hibernate, collections means one-to-many mapping for example):

// for example
private Set kids;

Is there any possible way except creating another wrapper (around Customer 
class)?

Thanks for any comments
Lucas