Equivalent for BeanFieldWrapper in vaadin7 to use with jpacontainer

Hi,

In vaadin 6 and jpacontainer 2.x I was using com.vaadin.customfield.beanfield.BeanFieldWrapper to wrap comboboxes that had a jpacontainer as the datasource so that wrapped field could be used in forms.

Now I am using fieldgroup and want to achieve the same thing.

How can I do that ?