using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Do("Hello world");

        DoHust("Hello world");

    }

    public static void Do<T>(T model)

    {

        Console.WriteLine("Do<T>(T model)");

        Do(new List<T> { model });

    }

    public static void Do<T>(List<T> models)

    {

        Console.WriteLine("Do<T>(IEnumerable<T> models)");

    }

    public static void DoHust<T>(T model)

    {

        Console.WriteLine("DoHust<T>(T model)");

        DoHust(new List<T> { model });

    }

    public static void DoHust<T>(IEnumerable<T> models)

    {

        Console.WriteLine("DoHust<T>(IEnumerable<T> models)");

    }

}