Overloading generics in C# proof of concept

test.cs

public static class A
{
    public static void a<T>(this T[] l, in T t) where T : struct
    {
    } 
}

public static class B
{
    public static void a<T>(this T[] l, T t) where T : class
    {
    } 
}

public static class C
{
    public static void Test()
    {
        int[] l = { 1, 2, 3 };
        l.a(l[0]);

        object[] k = { 1, 2, 3 };
        k.a(k[0]);
    }
}