assert l != null : "Listener can not be null"; //NOI18N
cs.addChangeListener(l);
}
public synchronized void removeChangeListener(ChangeListener l) {
assert l != null : "Listener can not be null"; //NOI18N
cs.removeChangeListener(l);
}
public void propertyChange (PropertyChangeEvent event) {
if (ScalaPlatform.PROP_JAVADOC_FOLDER.equals(event.getPropertyName())) {
synchronized (this) {