package Dancer2::Plugin::Menu ;
use 5.010; use strict; use warnings;

use Dancer2::Plugin;

sub BUILD {
  my $plugin = shift;
  $plugin->_do_stuff
}

sub _do_stuff {
  my $plugin = shift;
  print Dumper $plugin;   # does not print anything, undefined
  ...
 return $array_ref;
}

##</code><code>##

use Test::Most tests => 1, 'die';

BEGIN {
  $ENV{'DANCER_ENVIRONMENT'} = 'testing';
}

package TestApp;
use Dancer2;
use Dancer2::Plugin::Menu;
use Data::Dumper qw 'Dumper';

get '/'     => sub { return 'hello' };
get '/test' => sub { return 'hi' };

# do_stuff method gets called, but no object is passed to it so function won't work properly
deep_cmp [ '/', '/test' ], Dancer2::Plugin::Menu::do_stuff, 'returns expected array';