code: public static JinxConstants.PrivacyFilter flickrPrivacyFilterIdToPrivacyFilter(int privacyFilterId) {
          JinxConstants.PrivacyFilter ret;
          switch (privacyFilterId) {
              case 1:
                  ret = JinxConstants.PrivacyFilter.privacyPublic;
                  break;
              case 2:
                  ret = JinxConstants.PrivacyFilter.privacyFriends;
                  break;
              case 3:
                  ret = JinxConstants.PrivacyFilter.privacyFamily;
                  break;
              case 4:
                  ret = JinxConstants.PrivacyFilter.privacyFriendsAndFamily;
                  break;
              case 5:
                  ret = JinxConstants.PrivacyFilter.privacyPrivate;
                  break;
              default:
                  ret = null;
                  break;
          }
          return ret;
      }
docs: Convert a numeric Flickr privacy filter into the corresponding {@link net.jeremybrooks.jinx.JinxConstants.PrivacyFilter}
  
  @param privacyFilterId numeric Flickr privacy filter id.
  @return corresponding PrivacyFilter enum, or null if the argument is not a valid privacy filter id.