type encoding/json.byIndex

6 uses

	encoding/json (current package)
		encode.go#L1049: type byIndex []field
		encode.go#L1051: func (x byIndex) Len() int { return len(x) }
		encode.go#L1053: func (x byIndex) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
		encode.go#L1055: func (x byIndex) Less(i, j int) bool {
		encode.go#L1201: 		return byIndex(x).Less(i, j)
		encode.go#L1233: 	sort.Sort(byIndex(fields))