How to call post-constructor automatically

Hi all,

Let's assume we have a hierarchy of classes:

package Top;
use Moose;
...

package One;
use Moose;
extends 'Top';
....

package Two;
use Moose;
extends 'One';
....


I want to be able to call a method (let's say post_constructor) after 
the object Two has been created:

my $obj = Two->new(...).
$obj->post_constructor().

The trick is I want the method be called implicitly as a part of new.
It is almost as having a hidden subclass of Two with a call to 
post_constructor in its BUILD method.

I hope I was able to explain what I'm looking for.


-- 

Yuri