Base role for helpers
Confirms that provides (and curries) has all valid possibilities in it.
Ensures that the type constraint (\*(C`isa\*(C') matches the helper type.
All complex software has bugs lurking in it, and this module is no exception. If you find a bug please either email me, or add the bug to cpan-RT.
Yuval Kogman
Shawn M Moore
Jesse Luehrs
Copyright 2007-2009 by Infinity Interactive, Inc.
<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.