Role::HasMessage - a thing with a message method
This is another extremely simple role.
A class that includes Role::HasMessage is promising to provide a
message method that returns a string summarizing the message or event represented by the object.
It does not provide any actual behavior.
Ricardo Signes <firstname.lastname@example.org>
This software is copyright (c) 2013 by Ricardo Signes.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.