code: func GetResourceUtilizationRatio(metrics PodMetricsInfo, requests map[string]int64, targetUtilization int32) (utilizationRatio float64, currentUtilization int32, rawAverageValue int64, err error) {
  	metricsTotal := int64(0)
  	requestsTotal := int64(0)
  	numEntries := 0
  
  	for podName, metric := range metrics {
  		request, hasRequest := requests[podName]
  		if !hasRequest {
  			// we check for missing requests elsewhere, so assuming missing requests == extraneous metrics
  			continue
  		}
  
  		metricsTotal += metric.Value
  		requestsTotal += request
  		numEntries++
  	}
  
  	// if the set of requests is completely disjoint from the set of metrics,
  	// then we could have an issue where the requests total is zero
  	if requestsTotal == 0 {
  		return 0, 0, 0, fmt.Errorf("no metrics returned matched known pods")
  	}
  
  	currentUtilization = int32((metricsTotal * 100) / requestsTotal)
  
  	return float64(currentUtilization) / float64(targetUtilization), currentUtilization, metricsTotal / int64(numEntries), nil
  }
docs: // GetResourceUtilizationRatio takes in a set of metrics, a set of matching requests,
  // and a target utilization percentage, and calculates the ratio of
  // desired to actual utilization (returning that, the actual utilization, and the raw average value)