resharper naming rules for xaml namespaces

Question

In Resharper 5.0 when I use a type in XAML that I don not have a nampsace include for yet, it automatically adds the namespace as follows:

xmlns:ViewModel="clr-namespace:MyNameSpace.ViewModel"

How can I force it to use abreviations like this:

xmlns:vm="clr-namespace:MyNameSpace.ViewModel"