lang/c++/jsonschemas/nested.error

{
    "type": "record",
    "name": "LongList",
    "fields": [
        {
            "name": "value",
            "type": "long"
        },
        {
            "name": "next",
            "type": [
                "LongLister",
                "null"
            ]
        }
    ]
}