{
    "$id": "http://xxx.local/schemas/mySchema.json",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "definitions": {
        "topDef": {
            "$id": "#topDef_ref",
            "type": "object",
            "properties": {
                "value": {
                    "type": "integer",
                    "maximum": 100
                }
            }
        }
    },

    "type": "object",
    "properties": {
        "top": {
            "$ref": "#/definitions/topDef"
        }
    }
}