WebChannel not supported Rest parameters of qml function

QtObject {
        id: qmlConsole

        WebChannel.id: "console"

        function log(...args) {
            console.log("WebChannel:", args)
        }
        function info(...args) {
            console.info("WebChannel:", args)
        }
        function warn(...args) {
            console.warn("WebChannel:", args)
        }
        function error(...args) {
            console.error("WebChannel:", args)
        }
    }