Function clone_an_object

unsafe fn clone_an_object(
    cx: JSContext,
    global_scope: &GlobalScope,
    val: HandleValue<'_>,
    seen: &mut HashSet<HashableJSVal>,
    object_handle: Handle<'_, *mut JSObject>,
) -> WebDriverJSResult

https://w3c.github.io/webdriver/#dfn-clone-an-object