return errXLBackend
	}

	return nil
}

// A single function to write certain errors to be fatal
// or informative based on the `exit` flag, please look
// at each implementation of error for added hints.
//
// FIXME: This is an unusual function but serves its purpose for
// now, need to revisit the overall erroring structure here.
// Do not like it :-(
func logFatalErrs(err error, endpoint Endpoint, exit bool) {

	valueIndexes := make([]int, 0, len(keys))
	for _, key := range keys {
		i := strings.Index(input, key+KvSeparator)
		if i == -1 {
			continue
		}
		valueIndexes = append(valueIndexes, i)
	}

	sort.Ints(valueIndexes)
	fields := make([]string, len(valueIndexes))
	for i := range valueIndexes {
		j := i + 1
		if j < len(valueIndexes) {
			fields[i] = strings.TrimSpace(input[valueIndexes[i]:valueIndexes[j]])
		} else {

var statusTextToCode = map[string]int{
	"Continue":                        http.StatusContinue,
	"Switching Protocols":             http.StatusSwitchingProtocols,
	"Processing":                      http.StatusProcessing,
	"Early Hints":                     http.StatusEarlyHints,
	"OK":                              http.StatusOK,
	"Created":                         http.StatusCreated,
	"Accepted":                        http.StatusAccepted,