using System;

using System.Net.Http;

using RestSharp;

using System.Threading.Tasks;

public class Program

{

    public static async Task Main()

    {

​

        var httpClient = new HttpClient() { BaseAddress = new Uri("https://httpstat.us/") };

        var client = new RestClient(httpClient);

        var request = new RestRequest("200", Method.Get);

        request.AddParameter("delay", "1000");

​

        Console.WriteLine(client.BuildUri(request).AbsoluteUri);                          

    }

}