3 // LabelValues is a type alias that provides validation on its With method.
4 // Metrics may include it as a member to help them satisfy With semantics and
5 // save some code duplication.
6 type LabelValues []string
8 // With validates the input, and returns a new aggregate labelValues.
9 func (lvs LabelValues) With(labelValues ...string) LabelValues {
10 if len(labelValues)%2 != 0 {
11 labelValues = append(labelValues, "unknown")
13 return append(lvs, labelValues...)