```ts
// ButtonGroup.stories.ts

import { Meta, moduleMetadata, Story } 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 {
  /* 👇 The title prop is optional.
   * See https://storybook.js.org/docs/angular/configure/overview#configure-story-loading
   * to learn how to generate automatic titles
  */
  title: 'ButtonGroup',
  component: ButtonGroup,
  decorators: [
    moduleMetadata({
      declarations: [Button],
      imports: [CommonModule],
    }),
  ],
} as Meta;

const Template: Story = (args) => ({
  props: args,
});

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