@kotlinx.cinterop.ExternalObjCClass public interface WKScriptMessageHandlerProtocol : platform.darwin.NSObjectProtocol {
    @kotlinx.cinterop.ObjCMethod public abstract fun userContentController(userContentController: platform.WebKit.WKUserContentController, didReceiveScriptMessage: platform.WebKit.WKScriptMessage): kotlin.Unit
}

val scriptMessageHandler: platform.WebKit.WKScriptMessageHandlerProtocol = object : platform.WebKit.WKScriptMessageHandlerProtocol, NSObject() {
    override fun userContentController(
        userContentController: WKUserContentController,
        didReceiveScriptMessage: WKScriptMessage
    ) {
        println("Received the following message ${didReceiveScriptMessage.body}")
    }
}