code: public static JinxConstants.GroupPrivacy privacyIdToGroupPrivacyEnum(Integer id) {
          if (id == null) {
              return null;
          }
          JinxConstants.GroupPrivacy privacy;
          switch (id) {
              case 1:
                  privacy = JinxConstants.GroupPrivacy.group_private;
                  break;
              case 2:
                  privacy = JinxConstants.GroupPrivacy.group_invite_only_public;
                  break;
              case 3:
                  privacy = JinxConstants.GroupPrivacy.group_open_public;
                  break;
              default:
                  privacy = null;
                  break;
          }
          return privacy;
      }
docs: Convert a Flickr group privacy numeric identifier to the corresponding GroupPrivacy enum value.
  
  @param id Flickr group privacy id.
  @return corresponding GroupPrivacy enum value, or null if the parameter is invalid.