This is really useful for extensions defining new metaobjects. It was
already documented as an external symbol, but not actually exported.
check-unused-properties function
coerce-property-value generic
decode-property generic
+ default-slot-from-property macro
get-property function
make-property function
make-property-set function
;;;--------------------------------------------------------------------------
;;; Utility macros.
+(export 'default-slot-from-property)
(defmacro default-slot-from-property
((instance slot &optional (slot-names t))
(pset property type