Model.aggregate in 2.0

Hello you used to be able to aggregate to only get the props you need like so

`
 const payload = await getPayloadClient();

  const model = payload.collections[SolutionsPagesCms.slug].Model;
  const solutionsShort = await model.aggregate<{ id: string; slug: string }>([
    {
      $group: {
        _id: { $toString: "$_id" },
        slug: { $first: "$slug" }, // Using $first to get the slug of the first document in each group
      },
    },
  ]);

`

However I'm not sure how you would do that in 2.0 any ideas?