'From Squeak3.4 of 1 March 2003 [latest update: #5170] on 4 April 2003 at 3:56:41 pm'! "Change Set: KCP-0038-pullwithallsub Date: 4 April 2003 Author: stephane ducasse and alexandre bergel Pull up the method withallSubclasses from classDescription to behavior."! !Behavior methodsFor: 'accessing class hierarchy'! withAllSubclasses "Answer a Set of the receiver, the receiver's descendent's, and the receiver's descendent's subclasses." ^ self allSubclasses add: self; yourself! ! ClassDescription removeSelector: #withAllSubclasses!