Êþº¾2addChangeListener'(Lptolemy/kernel/util/ChangeListener;)VexecuteChangeRequests()VisDeferringChangeRequests()ZremoveChangeListener requestChange&(Lptolemy/kernel/util/ChangeRequest;)VsetDeferringChangeRequests(Z)V SourceFileChangeable.javaptolemy/kernel/util/Changeablejava/lang/Object