code: func ConvertTimeout(timeout string, defaultUnit time.Duration) time.Duration {
  	if timeoutI, err := strconv.Atoi(timeout); err == nil {
  		log.Warn("cassandra_store: specifying the timeout as integer is deprecated, please use a duration value")
  		return time.Duration(timeoutI) * defaultUnit
  	}
  	timeoutD, err := time.ParseDuration(timeout)
  	if err != nil {
  		log.Fatalf("cassandra_store: invalid duration value %q", timeout)
  	}
  	return timeoutD
  }
docs: // ConvertTimeout provides backwards compatibility for values that used to be specified as integers,
  // while also allowing them to be specified as durations.