Vaadin Sampler sample is not up to date

The
Drag & Drop tree sorting
sample contains a comment in getAcceptCriterion() which is the following :


            // Alternatively, could use the following criteria to eliminate some
            // checks in drop():
            // new And(IsDataBound.get(), new DragSourceIs(tree));

It seems that now “DragSourceIs” is only “SourceIs” (Vaadin 6.7)