FieldGroup.bindMemberFields() does not create fields

Hi,

In Vaadin 6 I was using this to populate a form with fields from a pojo using a FieldFactory:

        UserFieldFactory formFieldFactory = new UserFieldFactory();
        form.setFormFieldFactory(formFieldFactory);
        form.setLayout(new VerticalLayout());
        item = new BeanItem<Object>(pojo);
        form.setItemDataSource(item, Arrays.asList(new String { "type", "sender", "personal", "bcc", "subject", "template" }));
        // setItemDataSource called the factory 6 times and the fields were added to the form
        
Now I am using:
        
        item = new BeanItem<Object>(pojo);
        fieldGroup = new FieldGroup(item);
        FieldGroupFieldFactory formFieldFactory = new UserFieldFactory();
        fieldGroup.setFieldFactory(formFieldFactory);
        fieldGroup.buildAndBindMemberFields(formLayout);
        
and buildAndBindMemberFields does not call the factory at all. Why not?

Thanks,
Roland