code: public static void ignoreUpdate(Version ver) {
          FOKLogger.info(UpdateChecker.class.getName(), "User ignores all updates up to (and including) version " + ver.toString());
          updatePrefs.setPreference(latestSeenVersionPrefKey, ver.toString());
      }
docs: Versions lower or equal to {@code ver} will be ignored when using
  {@link #isUpdateAvailable(URL, String, String, String)}
  
  @param ver The version to ignore