Fix extended set characters as file name to be correctly encoded

using System;
using NuxeoClient;
using NuxeoClient.Wrappers;

namespace myApp
{
    class Program
    {
        static async System.Threading.Tasks.Task Main(string[] args)
        {
            Console.WriteLine("Hello World!");
            Console.WriteLine("The current time is " + DateTime.Now);

            Client client = new Client("http://localhost:8080/nuxeo/",
                        new Authorization("Administrator",
                                          "Administrator"));
            Console.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));

            Blob blobV = Blob.FromFile(".\\DSC00388.JPG")
                                .SetFilename("ÅÄÖåäö")
                                //.SetFilename("AAOaao")
                                //.SetFilename("éèçàùµ")
                                .SetMimeType("image/jpg");
            Console.WriteLine(blobV);


            // Do any async anything you need here without worry
            var myVisningsFil = await client.Operation("Blob.AttachOnDocument")
                                                .SetParameter("document", "4779be1d-9dea-4e87-a98a-dfba92e04985")
                                                .SetParameter("xpath", "file:content")
                                                .SetInput(blobV)
                                                .Execute();

        }

    }
}

                FileName = blob.Filename

                FileNameStar = blob.Filename