1package sample.evolve;
2
3/**
4 * Signals that VersionManager.update() fails.
5 */
6public class CannotUpdateException extends Exception {
7    public CannotUpdateException(String msg) {
8	super(msg);
9    }
10
11    public CannotUpdateException(Exception e) {
12	super("by " + e.toString());
13    }
14}
15