```ts
// List.stories.ts

import { Meta, moduleMetadata, Story } from '@storybook/angular';

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

import { List } from './list.component';
import { ListItem } from './list-item.component';

export default {
  /* 👇 The title prop is optional.
   * See https://storybook.js.org/docs/7.0/angular/configure/overview#configure-story-loading
   * to learn how to generate automatic titles
   */
  title: 'List',
  component: List,
  subcomponents: { ListItem }, //👈 Adds the ListItem component as a subcomponent
  decorators: [
    moduleMetadata({
      declarations: [List, ListItem],
      imports: [CommonModule],
    }),
  ],
} as Meta;

 /*
 *👇 Render functions are a framework specific feature to allow you control on how the component renders.
 * See https://storybook.js.org/docs/7.0/angular/api/csf
 * to learn how to use render functions.
 */
export const Empty: Story = {};

export const OneItem: Story = {
  args: {},
  render: (args) => ({
    props: args,
    template: `
      <app-list>
        <app-list-item></app-list-item>
      </app-list>
  `,
  }),
};
```