using System;

​

interface IBackgroundJob<TParam>

{

    void Handle(TParam obj);

}

​

class ConsoleWriterJob : IBackgroundJob<int>

{

    public void Handle(int obj)

    {

        Console.WriteLine(string.Format("obj is: {0}", obj));

    }

}

public class Program

{

    public static void Main()

    {

        var job = new ConsoleWriterJob();

​

        job.Handle(42);

    }

}

​

​