Specially here:
```D
void destroy(bool initialize = true, T)(T obj) if (is(T == class))
{
(..)
else
{
// Bypass overloaded opCast
auto ptr = (() @trusted => *cast(void**) &obj)();
rt_finalize2(ptr, true, initialize);
}
}
```
and for interface:
```D
cast(Object)obj
```
But i suspect you'll have to implement the whole typeinfo
