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      Work or Derivative Works thereof in any medium, with or without

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      or contributory patent infringement, then any patent licenses
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      Work or Derivative Works thereof in any medium, with or without

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        }
        doc.put(fessConfig.getResponseFieldUrlLink(), getUrlLink(doc));
        String createdStr;
        final Date created = DocumentUtil.getValue(doc, fessConfig.getIndexFieldCreated(), Date.class);
        if (created != null) {
            final SimpleDateFormat sdf = new SimpleDateFormat(CoreLibConstants.DATE_FORMAT_ISO_8601_EXTEND);
            createdStr = sdf.format(created);

    defaultDelay: Int,
  ): Int {
    val header = userResponse.header("Retry-After") ?: return defaultDelay

    // https://tools.ietf.org/html/rfc7231#section-7.1.3
    // currently ignores a HTTP-date, and assumes any non int 0 is a delay
    if (header.matches("\\d+".toRegex())) {
      return Integer.valueOf(header)
    }
    return Integer.MAX_VALUE
  }

  companion object {
    /**

      int i = 0;
      for (Object part : parts) {
        if (i == toJoin.length) {
          /*
           * We first initialized toJoin to the size of the input collection. However, that size can
           * go out of date (for a collection like CopyOnWriteArrayList, which may have been safely
           * modified concurrently), or it might have been only an estimate to begin with (for a