[
  {
    "name": "DEF",
    "parent": "null",
    "relation": "null",
    "depth": 0,
    "children": [
      {
        "name": "ABC",
        "parent": "DEF",
        "relation": "ghi",
        "depth": 1,
        "children": [
          {
            "name": "new_name",
            "parent": "ABC",
            "relation": "rel",
            "depth": 2
          },
          {
            "name": "new_name2",
            "parent": "ABC",
            "relation": "foo",
            "depth": 2
          }
        ]
      },
      {
        "name": "Foo",
        "parent": "DEF",
        "relation": "rel",
        "depth": 2
      }
    ]
  }
]