```js
// ButtonGroup.stories.js

import React from 'react';
import { ButtonGroup } from '../ButtonGroup';
import * as ButtonStories from './Button.stories';

export default {
  title: 'ButtonGroup',
  component: ButtonGroup,
}
const Template = (args) => <ButtonGroup {...args} />

export const Pair = Template.bind({});
Pair.args = {
  buttons: [ ...ButtonStories.Primary.args, ...ButtonStories.Secondary.args ],
  orientation: 'horizontal',
};
```