如何在Angular中显示分组数组？

groups = [
  { id: 1, name: 'Group A', items: [{ id: 1, name: 'Item 1' }, { id: 2, name: 'Item 2' }] },
  { id: 2, name: 'Group B', items: [{ id: 3, name: 'Item 3' }, { id: 4, name: 'Item 4' }] },
  // 其他分组...
];

<div *ngFor="let group of groups">
  <h2>{{ group.name }}</h2>
  <ul>
    <li *ngFor="let item of group.items">{{ item.name }}</li>
  </ul>
</div>