=pod

=head1 NAME

MooseX::Role::Parameterized::Extending - extending MooseX::Role::Parameterized roles

=head1 DESCRIPTION

There are heaps of useful modules in the C<MooseX> namespace that you can use
to make your roles more powerful. However, they do not always work out of the
box with L<MooseX::Role::Parameterized>, but it's fairly straight-forward to
achieve the functionality you desire.

L<MooseX::Role::Parameterized> was designed to be as extensible as the rest of
L<Moose>, and as such it is possible to apply custom traits to both the
parameterizable role or the ordinary roles they generate. In this example, we
will look at applying the fake trait C<MooseX::MagicRole> to a parameterizable
role.

First we need to define a new metaclass for our parameterizable role.

    package MyApp::Meta::Role::Parameterizable;
    use Moose;
    extends 'MooseX::Role::Parameterized::Meta::Role::Parameterizable';
    with 'MooseX::MagicRole';

This is a class (observe that it uses L<Moose>, not L<Moose::Role>) which
extends the class which governs parameterizable roles.
L<MooseX::Role::Parameterized::Meta::Role::Parameterizable> is the metaclass
that packages using L<MooseX::Role::Parameterized> receive by default.

Note that the class we are extending,
L<MooseX::Role::Parameterized::Meta::Role::ParameterizB<I<able>>|MooseX::Role::Parameterized::Meta::Role::Parameterizable>,
is entirely distinct from the similarly-named class which governs the
ordinary roles that parameterized roles generate. An instance of
L<MooseX::Role::Parameterized::Meta::Role::ParameterizB<I<ed>>|MooseX::Role::Parameterized>
represents a role with its parameters already bound.

Now we can take advantage of our new subclass by specifying that we want to use
C<MyApp::Meta::Role::Parameterizable> as our metaclass when importing
L<MooseX::Role::Parameterized>:

    package MyApp::Role;
    use MooseX::Role::Parameterized -metaclass => 'MyApp::Meta::Role::Parameterizable';

    role {
        ...
    }

And there you go! C<MyApp::Role> now has the C<MooseX::MagicRole> trait applied.

=cut