code: func (f ZoneTagFilter) Match(tagsMap map[string]string) bool {
  	for _, tagFilter := range f.zoneTags {
  		filterParts := strings.SplitN(tagFilter, "=", 2)
  		switch len(filterParts) {
  		case 1:
  			if _, hasTag := tagsMap[filterParts[0]]; !hasTag {
  				return false
  			}
  		case 2:
  			if value, hasTag := tagsMap[filterParts[0]]; !hasTag || value != filterParts[1] {
  				return false
  			}
  		}
  	}
  	return true
  }
docs: // Match checks whether a zone's set of tags matches the provided tag values