fun add(line: String) =
      apply {
        val index = line.indexOf(':')
        require(index != -1) { "Unexpected header: $line" }
        add(line.substring(0, index).trim(), line.substring(index + 1))
      }

    /**
     * Add a header with the specified name and value. Does validation of header names and values.
     */
    fun add(
      name: String,

        if (versioning != null) {
            String timestamp = versioning.getLastUpdated() == null
                    ? ""
                    : versioning.getLastUpdated().trim();

            if (versioning.getRelease() != null
                    && !versioning.getRelease().isEmpty()
                    && timestamp.compareTo(versions.releaseTimestamp) > 0) {

    when (this[i]) {
      '\t', '\n', '\u000C', '\r', ' ' -> Unit
      else -> return i + 1
    }
  }
  return startIndex
}

/** Equivalent to `string.substring(startIndex, endIndex).trim()`. */
fun String.trimSubstring(
  startIndex: Int = 0,
  endIndex: Int = length,
): String {
  val start = indexOfFirstNonAsciiWhitespace(startIndex, endIndex)

			extractedSignedHeaders.Set(header, strconv.FormatInt(r.ContentLength, 10))
		default:
			return nil, ErrUnsignedHeaders
		}
	}
	return extractedSignedHeaders, ErrNone
}

// Trim leading and trailing spaces and replace sequential spaces with one space, following Trimall()
// in http://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html
func signV4TrimAll(input string) string {

		ret.FieldsPerRecord = -1
		// If LazyQuotes is true, a quote may appear in an unquoted field and a
		// non-doubled quote may appear in a quoted field.
		ret.LazyQuotes = true
		// We do not trim leading space to keep consistent with s3.
		ret.TrimLeadingSpace = false
		ret.ReuseRecord = true
		return ret
	}

	return r, r.startReaders(newCsvReader)

            sb.append(escapedKey).append("=");
        } else {
            String val0 = valueLines.get(0);
            String rv0 = typed ? val0 : escapeJava(val0);
            if (!val0.trim().startsWith(escapedKey)) {
                valueLines.set(0, escapedKey + " = " + rv0 /*+ (0 < lastLine? "\\": "")*/);
                sb.append(escapedKey).append(" = ").append(rv0);
            } else {

            sb.append(escapedKey).append("=");
        } else {
            String val0 = valueLines.get(0);
            String rv0 = typed ? val0 : escapeJava(val0);
            if (!val0.trim().startsWith(escapedKey)) {
                valueLines.set(0, escapedKey + " = " + rv0 /*+ (0 < lastLine? "\\": "")*/);
                sb.append(escapedKey).append(" = ").append(rv0);
            } else {

			}
		}
	case reflect.String:
		field.DataType = String
		if field.HasDefaultValue && !skipParseDefaultValue {
			field.DefaultValue = strings.Trim(field.DefaultValue, "'")
			field.DefaultValue = strings.Trim(field.DefaultValue, `"`)
			field.DefaultValueInterface = field.DefaultValue
		}
	case reflect.Struct:
		if _, ok := fieldValue.Interface().(*time.Time); ok {
			field.DataType = Time

	// Because unused fields are filled with NULs, we need
	// to skip leading NULs. Fields may also be padded with
	// spaces or NULs.
	// So we remove leading and trailing NULs and spaces to
	// be sure.
	b = bytes.Trim(b, " \x00")

	if len(b) == 0 {
		return 0
	}
	x, perr := strconv.ParseUint(p.parseString(b), 8, 64)
	if perr != nil {
		p.err = ErrHeader
	}
	return int64(x)
}

	}
	// If none left...
	if len(newKeys) == 0 {
		*x = nil
		return true
	}

	// Reserialize...
	x.serialize(plSize, newKeys, newVals)
	return true
}

// xlMetaV2TrimData will trim any data from the metadata without unmarshalling it.
// If any error occurs the unmodified data is returned.
func xlMetaV2TrimData(buf []byte) []byte {
	metaBuf, maj, minor, err := checkXL2V1(buf)
	if err != nil {