code: func (r SecureJSON) Render(w http.ResponseWriter) error {
  	r.WriteContentType(w)
  	jsonBytes, err := json.Marshal(r.Data)
  	if err != nil {
  		return err
  	}
  	// if the jsonBytes is array values
  	if bytes.HasPrefix(jsonBytes, []byte("[")) && bytes.HasSuffix(jsonBytes, []byte("]")) {
  		_, err = w.Write([]byte(r.Prefix))
  		if err != nil {
  			return err
  		}
  	}
  	_, err = w.Write(jsonBytes)
  	return err
  }
docs: // Render (SecureJSON) marshals the given interface object and writes it with custom ContentType.