By chapter 17, Acronym has a parent relationship to User and a sibling relationship to Category. Fluent.ParentProperty and Fluent.SiblingsProperty both conform to Relation which is where get(reload:on:) is implemented.
(Sorry, just Rubber Duck’ing here…)
Is there a difference between myAcronym.$categories.get(on: req.db) and myAcronym.$categories.query(on: req.db).all()?