Custom editor field dijit, cascading pulldowns, and hooking onto the onchange event?

TimDine

This is a followup to https://community.esri.com/message/532305#532305

I have two fields using custom Dijits that are pulldowns populated from a store object.  The behavior I'd like to see is that when I change one of the pulldowns I hook onto that event and change the contents of the store for the other pulldown.  It is the same behavior you would see in ArcGIS desktop with changing a subtype and getting a new domain assigned to a field (except subtypes / domains are bugged in feature services and I want to chain together five of these fields in sequential pulldowns).