{
    "type": "object",
    "properties": {
        "id": {
            "type": "string"
        },
        "tree": {
            "$ref": "#/definitions/tree"
        }
    },
    "required": [
        "id"
    ],
    "definitions": {
        "tree": {
            "type": "object",
            "properties": {
                "value": {
                    "type": "string"
                },
                "branches": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/tree"
                    },
                    "minItems": 1
                }
            },
            "required": [
                "value"
            ]
        }
    }
}