using System;

using System.Threading.Tasks;

​

public class Program

{

    public static void Main()

    {

        new Generic<string>(MethodAsync);

        new Generic<string>(new Func<Task<string>>(MethodAsync));

    }

    public static Task<string> MethodAsync()

    {

        return Task.FromResult("");

    }

}

​

public class Generic<T>

{

    public Generic(Func<T> action){ }

    public Generic(Func<Task<T>> func){ }

}