WebView2 corespondent for CefSharp IJavascriptCallback

I am using Microsoft.Web.WebView2 version 1.0.1185.39.

I have an object in C# that I use AddHostObjectToScript("MyObject", new MyObject()); to add it to the browser.

This was one of the methods from MyObject.cs in C#

 public string ExecuteTask(bool full, IJavascriptCallback callback= null)
 {
   Task.Run(() =>
            {
                    ( ... do stuff ...)
                    callback.ExecuteAsync(result);
            });
 return "";
 }

===================================
And this was the javascript code:

var objectCS = window["MyObject"];
            return new Promise((resolve) => {
                objectCS .ExecuteTask(full, (response) => {
                    var responseParsed = JSON.parse(response);
                    resolve(responseParsed );
              });
});

===================================

My problem is that I do not know for WebView2, what value should the callback parameter from C# have.
Any idea is very much appreciated

AB#40833899