code: func (this *summaryMetricsSource) addIntMetric(metrics *MetricSet, metric *Metric, value *uint64) {
  	if value == nil {
  		glog.V(9).Infof("skipping metric %s because the value was nil", metric.Name)
  		return
  	}
  	val := MetricValue{
  		ValueType:  ValueInt64,
  		MetricType: metric.Type,
  		IntValue:   int64(*value),
  	}
  	metrics.MetricValues[metric.Name] = val
  }
docs: // addIntMetric is a convenience method for adding the metric and value to the metric set.