package InvoiceCalculatorFactory;

use base qw( Class::Factory );

__PACKAGE__->add_factory_type(
         old_school => 'InvoiceCalculator::OldSchool' );
__PACKAGE__->add_factory_type(
         new_school => 'InvoiceCalculator::NewSchool' );
__PACKAGE__->add_factory_type(
        delinquent => 'InvoiceCalculator::Delinquent' );

##</code><code>##

my $calculator = InvoiceCalculatorFactory->new( $client->type );