{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "id": "http://footown.com/generic/address-override#",
    "type": "object",
    "required": [
        "country"
    ],
    "properties": {
        "country": {
            "$ref": "#/definitions/countries"
        }
    },
    "definitions": {
        "countries": {
            "type": "string",
            "enum": [
                "AU",
                "GB",
                "VN",
                "DE",
                "CH"
            ]
        }
    }
}