[
  {
    "id": 0,
    "name": "Lorum",
    "items": [
      {
        "id": 0,
        "name": "Lorum"
      },
      {
        "id": 0,
        "name": "Lorum"
      },
      ...
    ]
  }
  {
    "id": 0,
    "name": "Ipsum",
    "items": [
      {
        "id": 0,
        "name": "Lorum"
      },
      {
        "id": 0,
        "name": "Lorum"
      },
      ...
    ]
  }
]

[
  [
    {
      "id": 0,
      "name": "Ipsum",
      "items": [
        {
          "id": 0,
          "name": "Lorum"
        },
        {
          "id": 0,
          "name": "Lorum"
        },
        length: 4
      ]
    },
    {
      "id": 0,
      "name": "Ipsum",
      "items": [
        {
          "id": 0,
          "name": "Lorum"
        },
        {
          "id": 0,
          "name": "Lorum"
        },
        length: 5
      ]
    }
  ]
  [
    {
      "id": 0,
      "name": "Ipsum",
      "items": [
        {
          "id": 0,
          "name": "Lorum"
        },
        {
          "id": 0,
          "name": "Lorum"
        },
        length: 2
      ]
    },
    {
      "id": 0,
      "name": "Ipsum",
      "items": [
        {
          "id": 0,
          "name": "Lorum"
        },
        {
          "id": 0,
          "name": "Lorum"
        },
        length: 6
      ]
    }
  ]
]