/// <summary>
 /// This is a helper for posting a message that is a simple string
 /// rather than a JSON string representation of a JavaScript object. This
 /// behaves in exactly the same manner as PostWebMessageAsJson but the
 /// `window.chrome.webview` message event arg's data property will be a string
 /// with the same value as webMessageAsString. Use this instead of
 /// PostWebMessageAsJson if you want to communicate via simple strings rather
 /// than JSON objects.
 /// </summary>
 /// <param name="json"></param>
 public void PostWebMessageAsString(string json)
 {
     if (_webView2WebView != null)
     {
         _webView2WebView.PostWebMessageAsString(json);
     }
 }