I am hoping to extend the ESRI Editing Widget that is available with the Web Application Builder. The expectation of the end-users of the application is not to edit at the FeatureLayer level, but rather to use a system that is more familiar to them. So for example, instead of seeing separate layers in the Editing Widget for "Rivers" and "Lakes", they would see a single category called "Hydrologic Features", and inside of that category there would be the templates for both rivers (linear features) and lakes (polygon features). Is something like that possible? In looking at the Editing Widget.js, it seems that there may be some pretty tight coupling with the concept of a FeatureLayer, and I don't want to break other tools that may rely on that dependency.