code: func NewHTTPCodeRanges(strBlocks []string) (HTTPCodeRanges, error) {
  	var blocks HTTPCodeRanges
  	for _, block := range strBlocks {
  		codes := strings.Split(block, "-")
  		// if only a single HTTP code was configured, assume the best and create the correct configuration on the user's behalf
  		if len(codes) == 1 {
  			codes = append(codes, codes[0])
  		}
  		lowCode, err := strconv.Atoi(codes[0])
  		if err != nil {
  			return nil, err
  		}
  		highCode, err := strconv.Atoi(codes[1])
  		if err != nil {
  			return nil, err
  		}
  		blocks = append(blocks, [2]int{lowCode, highCode})
  	}
  	return blocks, nil
  }
docs: // NewHTTPCodeRanges creates HTTPCodeRanges from a given []string.
  // Break out the http status code ranges into a low int and high int
  // for ease of use at runtime