using System;

public class Program

{

    public static void Main()

    {

        var instance = new ImplicitImplementation();

        int result = instance.Add(2, 2);

        Console.WriteLine(result);

    }

    public class ImplicitImplementation : IFoo, IMoo

    {

        public string Member => "member";

​

        public int Add(int a, int b)

        {

            return a + b;

        }

    }

​

    public interface IFoo

    {

        string Member { get; }

​

        int Add(int a, int b);

    }

​

    public interface IMoo

    {

        string Member { get; }

​

        int Add(int a, int b);

    }

}