util/misc.go
func WriteJSONFile(name, prefix, indent string, data interface{}) error {
	file, err := os.Create(name)
	if err != nil {
		return err
	}
	defer file.Close()

	enc := json.NewEncoder(file)
	enc.SetIndent(prefix, indent)
	return enc.Encode(data)
}
func WriteJSONFile(name, prefix, indent string, data interface{}) error {
	file, err := os.Create(name)
	if err != nil {
		return err
	}
	defer file.Close()

	enc := json.NewEncoder(file)
	enc.SetIndent(prefix, indent)
	return enc.Encode(data)
}
// WriteJSONFile converts a given data instance to JSON and writes it to file.