code: func getFunctionArns(relations []ConfigRelation) (args []string) {
  	log.Debugf("Generating the tfvar apex_function_arns")
  	var arns []string
  	for _, rel := range relations {
  		arns = append(arns, fmt.Sprintf("%s = %q", rel.Function.Name, *rel.Configuration.FunctionArn))
  	}
  	args = append(args, "-var")
  	args = append(args, fmt.Sprintf("apex_function_arns={ %s }", strings.Join(arns, ", ")))
  	return args
  }
docs: // Generates a map that has the function's name as a key and the arn of the function as a value