public class ServiceFactory implements FactoryBean {
    @Autowired
    private List<AbstractService> services;

    private List<Class> additionalInterfaces = new ArrayList<Class>();

    @Override
    public Object getObject() throws Exception {
        if (services == null || services.isEmpty()) {
            throw new RuntimeException("Autowiring of service implementation is broken. Probably you referenced interface Service from the logic context. Use a more specific service interface instead.");
        }

        List<Class> interfaces = new ArrayList<Class>();
        for (AbstractService service : services) {
            for (Class<?> intf : service.getClass().getInterfaces()) {
                if (!AbstractService.class.equals(intf) && (AbstractService.class.isAssignableFrom(intf) || additionalInterfaces.contains(intf))) {
                    interfaces.add(intf);
                }
            }
        }
        interfaces.add(Service.class);
        return Mixin.create(interfaces.toArray(new Class[0]), services.toArray());
    }

    @Override
    public Class getObjectType() {
        return Service.class;
    }

    @Override
    public boolean isSingleton() {
        return true;
    }

    public void setAdditionalInterfaces(List<Class> additionalInterfaces) {
        this.additionalInterfaces = additionalInterfaces;
    }
}