flow2schema/tests/samples/mixed.json

{
    "types": [
        {
            "id": ["mixed", "X"],
            "kind": "mixed"
        },
        {
            "id": ["mixed", "Y"],
            "kind": "record",
            "fields": [{
                "name": "y",
                "value": {"kind": "mixed"},
                "required": true
            }]
        }
    ]
}