package class;
use Data::Dumper;

BEGIN {
    $Data::Dumper::Sortkeys = 1;
    print 'Before "use Class::MethodMaker": ';
    print Dumper(\%{*class::});
}

use Class::MethodMaker
        get_set      =>  [ qw/ field_1 field_2 field_3 field_4 field_5/] ,
        new_with_init =>  'new',
        new_hash_init =>  'hash_init' ;

BEGIN {
    print 'After "use Class::MethodMaker": ';
    print Dumper(\%{*class::});
}

# ...