package AbstractWidget;
use Moose;
use MooseX::ABC;

requires 'get_widget_type';


package LessAbstractWidget;
use Moose;
use MooseX::ABC;

extends 'AbstractWidget';


package SnazzyWidget;
use Moose;

extends 'LessAbstractWidget';

sub get_widget_type{ "BasicWidget" }

# BOOM:
# AbstractWidget requires LessAbstractWidget to implement get_widget_type