using System;

using System.Collections.Generic;

​

public interface IBaseSettings

{

}

​

public class Settings1 : IBaseSettings

{

    public int Param1 { get; set; }

}

​

public class Settings2 : IBaseSettings

{

    public string Param2 { get; set;}

}

​

​

public class Program

{

    public static IList<IBaseSettings> GetSEttings()

    {

        return new List<IBaseSettings>{

            new Settings1(),

            new Settings2()

        };

    }

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var settings = GetSEttings();

    }

}