{
    "additionalProperties": false,
    "properties": {
        "key": {
            "maxLength": 12,
            "pattern": "^[a-zA-Z0-9_\\.]+$",
            "type": "string"
        }
    },
    "required": [
        "key"
    ],
    "title": "ExtractRequest",
    "type": "object"
}