Find-Reference names a function, with lambda list (OBJECT FIELD):
Following the FIELD on OBJECT, return the referenced object.
Note that this returns an object of the appropriate type, not its ID code. The regular column reference function (CLASS)-(FIELD) will return the ID value, which may be of any type (eg, UUID, STRING, NUMBER, &c)
Defined in file src/db/generic-db.lisp.