*
* @author Thomas Pantelis
*/
-public class Shutdown implements Serializable {
+public final class Shutdown implements Serializable {
private static final long serialVersionUID = 1L;
+ public static final Shutdown INSTANCE = new Shutdown();
+
+ private Shutdown() {
+ // Hidden on purpose
+ }
+
+ @SuppressWarnings({ "static-method", "unused" })
+ private Shutdown readResolve() {
+ return INSTANCE;
+ }
}