Class::C3::Adopt::NEXT warning on deprecated NEXT

[bv]

Hoping someone can straighten me out. I'm trying to do this the right way, so if there's a better way, I'd love to hear it.

I wrote a Model for my Catalyst app that just loads a YAML file and provides accessors and validation. I copied some code from Catalyst::Model::DBI, specifically the code for new, but I'm getting warnings about my use of NEXT.

package Clio::Model::YAML;
use namespace::autoclean;
use base 'Catalyst::Model';
use MRO::Compat;

use Data::Dumper;
use YAML::Any qw(LoadFile);
use warnings;
use strict;

__PACKAGE__->mk_accessors('defs');

sub new
{
    my $class = shift;
    my $self = $class->NEXT::new(@_);
    $self->{defs} = mergekeys( LoadFile "db/clio.yml" );
    return $self;
}

The error I get is this:

$ ./script/clio_test.pl 
Clio::Model::YAML uses NEXT, which is deprecated. Please see the Class
+::C3::Adopt::NEXT documentation for details. NEXT used  at /home/mill
+er/actions/note_taker/Clio/script/../lib/Clio/Model/YAML.pm line 16

I read the documentation, and tried to follow it (hence the use MRO::Compat above). It says,

You add use MRO::Compat to the top of a package as you start converting it, and gradually replace your calls to NEXT::method() with maybe::next::method(), and calls to NEXT::ACTUAL::method() with next::method().

but when I change my code to my $self = $class->maybe::next::new(@_); I get this error:

Couldn't load class (Clio) because: Couldn't instantiate component "Clio::Model::YAML", "Can't locate object method "new" via package "maybe::next" at /home/miller/actions/note_taker/Clio/script/../lib/Clio/Model/YAML.pm line 16."Compilation failed in require at /usr/local/lib/perl/5.10.1/Class/MOP.pm line 98.

Am I reading this wrong? How am I supposed to do this under C3? Thanks for any help you can give.

UPDATE: Solved the problem. Short version: should be literally $class->maybe::next::method(@_). See my response below for details.