yui/yui3 — comment on commit a7e9ca67d735ae1bcdc1f7deb35ab98dd9c9f614
File: src/button/meta/button.json line 11
By ericf:

Probably just needs: `Y.namespace('Plugin');` before [L44](https://github.com/yui/yui3/blob/master/src/button/js/plugin.js#L44).