How to use DoPrestub in C#

[CreateAndInject]

class Program
{
    [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
    unsafe delegate IntPtr DoPrestub(RuntimeMethodHandle pMethodDesc, IntPtr pDispatchingMT); //RuntimeTypeHandle pDispatchingMT ???

    static void Main(string[] args)
    {
        var doPrestub = (DoPrestub)Marshal.GetDelegateForFunctionPointer(FindDoPrestub(), typeof(DoPrestub));
        var method = typeof(Demo<,>).GetMethod("Test");
        doPrestub(method.MethodHandle, ???); //How?
    }

    static IntPtr FindDoPrestub() { ... } //I can do it
}

class Demo<T1, T2>
{
    static Demo() => Console.WriteLine("Jitted");
    public static void Test<T3, T4>(T1 a, T2 b, T3 c, T4 d) { }
}

For non-generic, just doPrestub(..., NULL), but how to call it for generic?

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[jkotas]

What are you trying to do? Prestub is very special method. You cannot just call it from C# and hope that it will reliably work for all cases.