using System;

​

#nullable enable

public class Program

{

    T To1<T>(object? val)

    {

        if (!(val is T valT))

        {

            throw new InvalidCastException();

        }

​

        return valT;

    }

    T To2<T>(object? val)

    {

        var valT = (T)val;

​

        return valT; // Possible null reference return

    }

}