import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.PreferenceStore;
+import org.eclipse.jface.text.Assert;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
-import org.eclipse.jface.text.Assert;
-
/**
* An overlaying preference store.
*/