--- old/src/share/classes/com/sun/security/auth/NTSidGroupPrincipal.java	2013-02-21 17:46:39.572649532 +0000
+++ new/src/share/classes/com/sun/security/auth/NTSidGroupPrincipal.java	2013-02-21 17:46:39.280649539 +0000
@@ -40,6 +40,7 @@
  * @see javax.security.auth.Subject
  * @see com.sun.security.auth.NTSid
  */
+@jdk.Supported
 public class NTSidGroupPrincipal extends NTSid {
 
     private static final long serialVersionUID = -1373347438636198229L;