has 'foo';

##</code><code>##

package Base;
use Moose;
has 'x', default => 'Base'; # internal

sub foo {
   print shift->x;
}

package Child;
use Moose;
has 'x', default => 'Child'; # also internal

package main;
Base->new->foo;    # "Base"
Child->new->foo;   # "Base" or "Child"?