code: func (r *LambdaResults) Regions() []string {
  	regions := make([]string, 0)
  	for _, lambda := range r.Lambdas {
  		if lambda.Region != "" {
  			regions = append(regions, lambda.Region)
  		}
  	}
  	regions = util.RemoveDuplicates(regions)
  	sort.Strings(regions)
  	return regions
  }
docs: // Regions the LambdaResults were collected from