```dart
Future<void> deletePostWithId(String id) async {
  final postsWithId = await Amplify.DataStore.query(
    Post.classType,
    where: Post.ID.eq(id),
  );

  for (final element in postsWithId) {
    await Amplify.DataStore.delete(element);
    print('Deleted a post');
  }
}
```