Check that this argument is not null

[JohanLarsson]

class Program
{
    public void CallMe()
    {
        Console.WriteLine(this?.ToString() ?? "NULL");
    }

    static unsafe void Main()
    {
        var a = (Action<Program>)typeof(Program).GetMethod(nameof(CallMe)).CreateDelegate(typeof(Action<Program>));
        a(null);
    }
}