(defpackage #:cutil
  (:use #:common-lisp)
  (:export
   #:<abstract-class>))
(in-package #:cutil)

(defclass <abstract-class> () ())
(defmethod make-instance ((self <abstract-class>) &key)
  (error "Cannot instantiate abstract class ~A" (class-name c)))

(provide "cutil")