/* (non-Javadoc)
  * @see net.webpasswordsafe.client.LoginService#logout()
  */
 @Override
 public boolean logout() {
   auditLogger.log(
       new Date(),
       ServerSessionUtil.getUsername(),
       ServerSessionUtil.getIP(),
       "logout",
       "",
       true,
       "");
   ServerSessionUtil.setUsername(null);
   ServerSessionUtil.setRoles(null);
   ServerSessionUtil.invalidateSession();
   return true;
 }