virtual nodes below FACETSELECT return the same ItemId as the canonical physcial node

When printing the id for virtual nodes below FACETSELECT, we get the same ItemId :

System.out.println(" getId1 " + ((NodeImpl)ServicingNodeImpl.unwrap(node)).getId().toString() );
System.out.println(" getId2 " + ((NodeImpl)ServicingNodeImpl.unwrap(((HippoNode)node).getCanonicalNode())).getId().toString() );

For nodes below facetsearch instead of select the ItemId is different