code: private boolean isTokenLoggedOut(String ltpaToken) {
          boolean loggedOut = false;
          Object entry = LoggedOutTokenCacheImpl.getInstance().getDistributedObjectLoggedOutToken(ltpaToken);
          if (entry != null)
              loggedOut = true;
          return loggedOut;
      }
docs: Check to see if the token has been logged out.
  
  @param ltpaToken