using System;

public class Program

{

    public static void Main()

    {

        Func<string> action = () => {

            Console.WriteLine("Action called");

            return "Michael";

        };

        Log($"Hello, {action()}");

    }

    public static void Log(FormattableString message)

    {

        Console.WriteLine("Log called");

        Console.WriteLine(message.Format, message.GetArguments());  

    }

}