What is the canonical way to create tabs to a control panel configlet?

Today we use a "Multiple registry schema proxy" class to achieve this, but we think there should be a better way to work with tabs at Plone:

Created a stack overflow with this question: http://stackoverflow.com/questions/33610919/what-is-the-canonical-way-to-create-tabs-to-a-control-panel-configlet

I answered your question there: TL;DR use plone supermodel.