lxd/util/http.go
func WriteJSON(w http.ResponseWriter, body interface{}, debug bool) error {
	var output io.Writer
	var captured *bytes.Buffer

	output = w
	if debug {
		captured = &bytes.Buffer{}
		output = io.MultiWriter(w, captured)
	}

	err := json.NewEncoder(output).Encode(body)

	if captured != nil {
		shared.DebugJson(captured)
	}

	return err
}
func WriteJSON(w http.ResponseWriter, body interface{}, debug bool) error {
	var output io.Writer
	var captured *bytes.Buffer

	output = w
	if debug {
		captured = &bytes.Buffer{}
		output = io.MultiWriter(w, captured)
	}

	err := json.NewEncoder(output).Encode(body)

	if captured != nil {
		shared.DebugJson(captured)
	}

	return err
}
// WriteJSON encodes the body as JSON and sends it back to the client