{
        "trees": tree.Tree.validate({
            "id": 1,
            "name": "name_example",
            "description": "description_example",
            "children": [
                tree.Tree.validate({})
            ],
            "parent": tree.Tree.validate({}),
            "forest": forest.Forest.validate({}),
            "additional": {
                "key": tree.Tree.validate({}),
            },
        }),
    }