How to get the address of an instance of a class

[dokutoku via Digitalmars-d-learn]

I wrote the following code to get the address of a class 
instance, but it doesn't work.
Please let me know if there is a way to write it to work properly.
private import std;

```
class C
{
        C* this_pointer()
        {
                return this;
        }
}

void main()
{
        C Z = new C();
        writeln(&Z == Z.this_pointer());
}
```