using System;

using System.Threading.Tasks;

public class Program

{

    public async void Main()

    {

        var attempts = 20;

        var request = "JOPA!";

        do

        {

            await SendAsync(()=>SendAndLog(request));

            request = request + attempts;

            attempts--;

        }

        while (attempts>=0);

    }

    private static async Task SendAsync(Func<Task> action)

    {

        await action();

    }

    private static async Task SendAndLog(string request)

    {

        Console.WriteLine(request);

    }

}