{

"PropertyTypes": {
    "AWS::Serverless::Function.S3Event": {
        "patch": {
            "description": "Sets AWS::Serverless::Function.S3Event.Events#UpdateType to Immutable",
            "operations": [
                {
                    "op": "add",
                    "path": "/Properties/Events/UpdateType",
                    "value": "Immutable"
                }
            ]
        }
    }
}

}