package SomeTestPackage2;
use strict;
use warnings;
use Data::Dumper;

use constant IVARS => qw[$none $href $aref $non_empty_aref];

BEGIN {
use base qw[SomeAttributes2];
__PACKAGE__->import( IVARS );
}

use constant custom_aref => q{    confess( '!!!package!!! !!!ivar!!! must be an array ref' ) if 'ARRAY' ne ref !!!ivar!!!; };

sub self_sub : Method( qw/ $none :none $href :href $aref custom_aref $non_empty_aref :non_empty_aref / ) { #
    return ( ref $self, ref $href, ref $aref, scalar @{ $non_empty_aref } );
}

1;