docs: @Deprecated
      public static String parseRegionName(final String host,
                                           final String serviceHint) {
          String region = parseRegion(host, serviceHint);
  
          // If region is null, then endpoint is totally non-standard;
          // guess us-east-1 for lack of a better option.
          return region == null ? "us-east-1" : region;
      }