[macker-user] Never implement interface but only abstract class

[Etienne S. <et...@st...>]

Hi

I just started using Macker. It's great - straight-forward to use and 
very helpful!

Can I described the following rule with Macker (if so, how?):

"No class may implement interface IFoo directly. Classes must only 
extend the abstract class AbstractFoo which implements IFoo already. The 
one exception is the class AbstractFoo itself."

That would be great. Any help is appreciated!

--Etienne