amber-smalltalk/amber — pull request #743 by mkroehnert (2013-11-30 15:30:24+00:00)
Title: SystemAnnouncement: remove theClass instance variable + accessors

Both ClassAnnouncement and ProtocolAnnouncement contain the same instance variable + accessors.
The instance variable is removed from SystemAnnouncement since it does not generalize for all Announcement subclasses.