code: func FromMap(m map[string]string) Labels {
  	l := make(Labels, 0, len(m))
  	for k, v := range m {
  		l = append(l, Label{Name: k, Value: v})
  	}
  	sort.Sort(l)
  
  	return l
  }
docs: // FromMap returns new sorted Labels from the given map.