In short, I've built my own configurable data tracking module where I can specify tracking on entities and subsequently, their attributes, and references. In my Java code I am trying to get the best performance since it occurs on an event handler. My question is a little generic but, is it better to use IMendixObject.getReferences() and getReferenceSets() over any of the Core retrieval methods such as retrieveId or even retrieveXpathQuery?