The Phase role contains common code used by all the Data::Riak::MapReduce phase classes.
Flag controlling whether the results of this phase are included in the final result of the map/reduce.
pack method is required to be implemented by consumers of this role.
This software is copyright (c) 2013 by Infinity Interactive.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.