It is possible that after analyzing a .wsp that SPTransformator shows no code information. The reason for this is that SPTransformator only shows contents relating back to SharePoint.
For example; If an InfoPath is created with code behind it, this may not be brought into use but would be included in the .wsp. When the .wsp is analyzed in SPTransformator the results will be empty.
Modernization | Empty | Code | Information | Results