GWT MVP Roo - xxxEditActivityWrapper

Hello Everyone,

in Roo generated Expenses app:

in EmployeeEditActivityWrapper , there is this view interface
defined :
can anyone please explain what is this Interface for, why we need it,
and under what circumstances ?
whats the purpose of this interface ?

public interface View<V extends ProxyEditView<EmployeeProxy, V>>
extends ProxyEditView<EmployeeProxy, V> {

void setGenderPickerValues(Collection<Gender> values);

void setSupervisorPickerValues(Collection<EmployeeProxy> values);

}

private final View<?> view;

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