package Wibble;
use Moose;
use MooseX::AttributeHelpers;

has 'thingies' => (
  metaclass => 'Collection::Array',
  is        => 'ro',
  isa       => 'ArrayRef[Str]',
  default   => sub { [] },
  provides  => {
      push     => 'add_thingies',
      elements => 'list_thingies',
  },
);