```ts
// ButtonGroup.stories.ts

import { moduleMetadata } from '@storybook/angular';
import { CommonModule } from '@angular/common';

import { ButtonGroup } from './ButtonGroup.component';
import { Button } from './button.component';

//👇 Imports the Button stories
import * as ButtonStories from './Button.stories';

export default {
  component: ButtonGroup,
  decorators: [
    moduleMetadata({
      declarations: [Button],
      imports: [CommonModule],
    }),
  ],
};

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